Organocide® Plant Doctor® Systemic Fungicide FAQs

Organocide® Plant Doctor® is an earth-friendly broad spectrum disease control and preventative for use on turf, fruit trees, vegetables, ornamentals and flowers. Prevents and cures a myriad of plant diseases, including those that cause downy mildew, root rot, leaf and stem blights, leaf spots and many others! A systemic product, it has a foliar or root application that will work its way throughout the entire plant to prevent disease and attack existing disease above and below ground. Once inside the plant, Plant Doctor® increases plant metabolism so plants grow faster, bloom more and have an increased yield while providing a nutritional boost of potassium and phosphorous, essential nutrients for plant growth.

If you have any further questions about this or any of our other products, please be sure to drop us a note in our “Contact Us” area. We’re happy to reply…you’re the reason we’re here!

Here are your FAQs:
How is a systemic fungicide different from other fungicides?
  • A systemic fungicide can be sprayed directly on the foliage or applied to the root zone.
  • After initial application, a systemic product will rapidly absorb and then work throughout the entire plant. Other fungicides are contact fungicides: the product must make direct contact with the disease area in order to effectively treat the disease.
What diseases will PLANT DOCTOR control?
  • PLANT DOCTOR is very broad-spectrum and controls most diseases like anthracnose, black spot, stem blight, rust, downy mildew, phytophthora (root rot) and pythium.
Will PLANT DOCTOR prevent downy mildew on impatiens?
What makes PLANT DOCTOR so unique? 
  • PLANT DOCTOR is both a preventative and curative.
  • It will control pythium & phytophthora (root rot) as well as powdery mildew (foliar disease).
  • After 14-21 days, it converts into nutritional potassium and phosphorus, that the plant consumes as nutrients and nothing is left in the ground.
  • It is also a bio-stimulant; once inside the plant, it stimulates the plant’s metabolism resulting in more plant vigor, increase bloom and crop yield, and increasing stress resistance.
  • The active ingredients have been used for years in commercial growing and agri-business markets with great success.
How does it work? 
  • By stimulating the metabolism and plant vigor to such a high degree the plant staves off and overcomes disease.
  • Pathogens such as phytophora cannot process the active ingredient in Plant Doctor, though they will attempt to process it as a nutrient. This effect shuts down the pathogens’ cells, terminating the disease.
Can I use PLANT DOCTOR to soil drench my pear tree that has fire blight? 
  • Mix 3 oz of Plant Doctor per 25 gal of water and apply to a 10 x 10 ft area around the root zone of the tree, followed by irrigation to move the Plant Doctor into the root zone..
What about environmental impact? 
  • PLANT DOCTOR is an EPA registered fungicide with minimal impact on the environment and low risk to user and non target organisms, it is beneficial and nutritional to plants.
  • Re-entry time is as soon as spray has dried upon the leaves, however, if you are treating a fungus we recommend you allow the product to work thru the plant to ensure remedy.
Can Plant Doctor be used with fertilizers? 
  • You can add nutrients along with Plant Doctor in the following order.
  • 1. Fill your container half full of water and add the other nutrients – mix well.
  • 2. Add the Plant Doctor – mix well.
Can Plant Dr be tanked mixed? 
  • The product should NOT be tank mixed with most adjuvants, surfactants, stickers, or copper compounds. A compatibility test should first be conducted for fertilizers and other products before tank mixing.
Can Plant Dr be mixed with copper? 
  • Unfortunately Plant Doctor and Copper compounds are not compatible. When spraying before or after copper compounds an interval of 10 or more days between applications is recommended. Do not spray Plant Doctor if there are obvious copper residues present.
  • Plant Doctor mixed with Pentra-Bark surfactant is the only approved combination for control of Sudden Oak Death.
How long does the product stay in the plant?
  • The product will stay for as much as 7-10 days depending on the plant treated, time of application prior to rain (the product needs at least 2 hours to get into the plant).
When is it the safest time to eat the fruits after application?
  • Phosphoric acid (also contain in Coca Cola), will be the only residue on fruits treated with Plant Doctor systemic fungicide.  Then when used this product for post-harvest treatment, what is recommended is just wash the fruits with enough water for a couple of minutes.
Can you mix plant doctor into compost tea?
  • You can, but it would be best to avoid a direct recommendation.
How is it available? 
  • Quart concentrate & Pint concentrate
Plant Doctor Application for Medical Marijuana:

 

PLEASE NOTE – we have not personally tested on medical marijuana, however, these are the recommendations we’ve received from growers, so you may follow application directions at your own risk.

 

Downy / Powdery Mildew:
Foliar Application:
  • • Cure Mildew: 1-2 TBSP per gallon weekly for mildew until clear then prevention.
  • • Prevention: 1/2 tsp per gallon weekly
Soil Drench:
  • • Cure Mildew: 3 tsp per gallon weekly for 3 weeks or until mildew clears. Must be used separately in reservoir for 1 day (no other nutrients), because plant doctor will increase PPM and EC (electrical conductivity) of water. Drain reservoir and continue with normal feeding program.
  • • Prevention: 1/2 tsp per gallon weekly
Fusarium:
Soil Drench:
  • • 3½ tsp per gallon weekly for 3 weeks or until it clears then prevention ½ tsp per gallon weekly.
  • • Must be used separately in reservoir for 1 day (no other nutrients), because plant doctor will increase PPM and EC (electrical conductivity) of water.
  • • Drain reservoir and continue with normal feeding program.

Plant Doctor will not harm beneficial bacteria or mycorrhizae fungi. It is formulated to target only pathogenic fungi.

2018-04-06T10:15:05+00:00

82 Comments

  1. Robert October 28, 2018 at 6:24 pm - Reply

    Hello – if this product have any effect on unrooted cryptanthus pups? Specifically, does it prevent rooting in any way?

    • Plant Dr. October 31, 2018 at 12:51 pm - Reply

      Robert,

      Plant Doctor is both preventative and curative. Please follow label closely.

      Thank you.

  2. pat September 18, 2018 at 4:41 pm - Reply

    can this be used on greenhouse cucumbers

    • Plant Dr. September 18, 2018 at 4:51 pm - Reply

      Pat,
      Yes you can.

      Thank you

  3. Carolyn Pozzini September 8, 2018 at 5:19 pm - Reply

    This is more a Thank You note than a comment. About 6 years ago downy mildew came to my property. I can only speculate how, but it did. I really like my hanging baskets, which are in the shade, filled with Accent (walleriana) Impatiens and continued to use them. I tried various methods to control the mildew. Copper soap, watering early in the day and watering at the soil level, not on the plants, bleaching the pots after use.. No matter what I did, about August 15th they were ready to be destroyed. This year I used Plant Doctor. I started by following the directions on the label, using about an ounce per gallon every other week as a foliar drench. It worked, but when applied, no matter how gently, the next day the existing flowers vanished and I had to wait for the buds to blossom to get flowers. Then I read your instructions and used soil drench weekly and problem solved. It is Sept. 08 and still have my baskets. They are going to make it Another problem this year. The weather seemed highly conducive to powdery mildew. I even had it on “mildew resistant” phlox. I started used the “cure method” and while it did not change the damaged leaves back to green (of course) it worked. I have new green leaves and many of the phlox are giving me their secondary blooms. Next year I will start the preventive soil drench the minute they stick their little heads out of the soil. As a retired accountant, I of course figured the cost and believe me, for a home garden like mine, it is “dirt cheap”. Thank you so much.

    • Plant Dr. September 10, 2018 at 8:48 am - Reply

      Carolyn,

      We are so glad Plant Doctor worked you.

      We appreciate the feedback.

      Keep it coming!

      Thank you.

  4. Cathy September 3, 2018 at 4:30 pm - Reply

    Is Organocide Plant Doctor safe for use on properties with well water and septic systems?

    • Plant Dr. September 4, 2018 at 2:43 pm - Reply

      Cathy,

      Plant Doctor is safe to use with well water and septic systems.

      Thank you.

  5. Wendy Bauer September 3, 2018 at 2:20 pm - Reply

    Can I mix your product with insecticidal soap?

    • Plant Dr. September 4, 2018 at 1:52 pm - Reply

      Wendy,

      We don’t advise mixing Plant Doctor. If you choose to do so, a compatibility test should first be conducted for fertilizers and other products before tank mixing.

      Thank you.

  6. Wendy Bauer September 3, 2018 at 2:18 pm - Reply

    I bought Plant Doctor for Botrytis cinerea, or gray mold/fungus at The Urban Farmer in San Francisco when I asked a customer serviceperson what I should use. I had tried Neem oil and “Seranade,” which didn’t seem to help. What strength should I use?

    • Plant Dr. September 4, 2018 at 1:45 pm - Reply

      Wendy,

      What type of plant(s) are looking to treat?

      Thank you.

  7. Sarah August 21, 2018 at 3:31 pm - Reply

    I am located in Pennsylvania and have three crabapple trees with apple scab. The trees have lost more than 3/4 of their leaves. Is it worth doing a soil dredge at this point? Or should I wait to treat in the spring? Not sure if treating would help limit the amount of spores that return next season. Thanks!

    • Plant Dr. August 22, 2018 at 3:35 pm - Reply

      Sarah,

      You can most definitely treat your trees now. Plant Doctor works by stimulating the metabolism and plant vigor to such a high degree the plant staves off and overcomes disease.

      Thank you.

  8. A.J. August 13, 2018 at 2:38 pm - Reply

    Will Plant Doctor kill pathogens both on contact and systemically? Or just systematically? Thank you,

    • Plant Dr. August 13, 2018 at 2:44 pm - Reply

      A.J.
      Plant Doctor works both on contact and systemically.

      Thank you.

      • A.J. August 13, 2018 at 3:16 pm - Reply

        Fantastic, thanks friends!

  9. Michael August 13, 2018 at 2:17 pm - Reply

    In instructions asterisk = Not for use in California.

    Why?

    • Plant Dr. August 13, 2018 at 3:35 pm - Reply

      Michael,
      This is a labeling requirement for the state of California.
      None of our products fall under the label requirements of Prop 65 and none of our product contain heavy metals.

      Thank you.

  10. AJ. August 6, 2018 at 1:50 am - Reply

    Hi, This is a great forum. I noticed some white colored mold growing on dead petioles and dried calluses that are just under or touching the soil line. They are growing in peat top dressed with perlite. The plants were initially in a cloner too long and some developed a white colored mold on dead stems. Roots have been established for around two months and things seem very healthy. However, sometimes when moving perlite from around the stalk a hardened callus (formed from cloning collars) or a dead petiole that got buried is completely covered in white mold that sizzles if sprayed with H2O2.

    Do you recommend slightly drenching the soil around the staulk with Plant Doctor?

    I don’t know if this fungus is benign to plants and only attacking dead organic mater that happens to still be attached to the plants or a more serious white mold that can slowly kill the plant once it penetrates more deeply. It doesn’t seem to grow on living tissue like powdery mildew. I don’t think it’s the classic white mold aka southern blight bc I haven’t seen any dark colored pods nor is it fuzzy like white or grey mold. I figured it would have killed the plants by now if a more serious white mold. It looks a lot like the harmless white fungi that grows on top of over watered peat moss or the twigs in peat but the way it completely covers a dead petiole under the soil is what concerns me and it’s likely it came from the cloner.

    Thanks for your help,

    • Plant Dr. August 7, 2018 at 3:04 pm - Reply

      A.J.

      You can definitely apply Plant Doctor, it won’t do any harm. We have no way to diagnose what is on you plant, we recommend you reach out to your local county extension service. It is a free service that can determine a problem, provide the best varieties of plants in your area, or general maintenance of your garden. If you decide to use Plant Doctor please follow the label instructions as close as possible.

      Thank you.

      • A.J. August 8, 2018 at 9:01 pm - Reply

        Thank you Plant Doctor for your response. My plan of action will be to apply a bio fungicide that contains Streptomyces lydicusin a beneficial microbe. I plan on spot treating the stalks of cuttings using a spray bottle allowing some Plant Doctor to reach the roots. Do you recommend applying the Streptomyces lydicus before or after Plant Doctor and will Plant Doctor kill pathogens on contact in the soil? I’m also considering adding sm-90 to the watering regiment for prevention while using Plant Doctor to spot treat. Thanks,

  11. Darren August 2, 2018 at 9:34 am - Reply

    Which is the preferred way to control fire blight in fruit trees soil drench or a spray?

    • Plant Dr. August 2, 2018 at 5:00 pm - Reply

      Darren,

      Regarding Fire Blight The Plant Doctor label calls for 2 different types of applications, foliar spray or basal bark spray.

      Please let us know if you don’t have the instructions available, we would be happy to provide these to you.

      Thank you.

  12. Darren August 2, 2018 at 9:32 am - Reply

    Can Organocide be mixed with pesticides and used to spray fruit trees at the same time?

    • Plant Dr. August 3, 2018 at 4:33 pm - Reply

      Darren,
      The product should not be tank mixed with most adjuvants, surfactants, stickers, or copper compounds. A compatibility test should first be conducted for fertilizers and other products before tank mixing.

      Thank you.

  13. Ben July 18, 2018 at 10:24 am - Reply

    I have a 2500 gallon tank that feeds about 14,000 sq feet of greenhouse for cannabis through a drip system. How would you recommend I apply plant doctor systemic to treat pythium, phytophthora, and powdery mildew. And how often do I apply for preventative maintenance? Thank you.

  14. Ben July 15, 2018 at 3:02 pm - Reply

    For Cannabis pythium disease (stem rot), what is the application rate. I heard that it is brushed on with pentra-bark, but I do not know the mixture ratios. Thanks

    • Plant Dr. July 17, 2018 at 4:28 pm - Reply

      Ben,
      We recommend Plant Doctor Systemic Fungicide for Pythium and phytophthora. It is systemic. It is both curative and preventative.

      Please note – we have not personally tested on medical marijuana.

      Thank you.

  15. Marty June 27, 2018 at 4:40 pm - Reply

    Hi, I’m a licensed legal cannabis grower in the state of Colorado. I’m not here to bash your product but to warn other cannabis growers that the recommendation amount that you have received from other growers is far too much. I applied a soil drench of Organocide Plant Doctor Systemic Fungicide at the suggested 3 tsp per gal and within about 9 hours the leaves turned brown, shriveled up and dried out. I know i was following the recommendation at my own risk. Im not blaming Organic Laboratories. But it doesn’t say how much of that gallon to add to each plant. Obviously if one was to use a whole gal than 3 tsp of the product would be available to be taken up by the plants and if split between two plants only 1 1/2 would be available to each. I’m sure that has to play a major role in how it effects the plants also. Please use cautious and ues Systemic Organocide Plant Doctor sparingly. Thanks!

    • Plant Dr. June 29, 2018 at 3:02 pm - Reply

      Marty,
      I apologize for the delay in responding.

      When using a soil drench, you would typically use no more than one cup of the mixture for a mature plant.

      The concept of getting a systemic fungicide into the soil is simply pouring a sufficient amount to get to the root system.

      Mix 3oz. of Plant Doctor in 25 gallons of water and apply to a 10×10 area.

      I’m sorry for this situation, we’ll forward this to our website administrator to make changes where see fit.

      Thank you.

      Plant Doctor Application for Medical Marijuana:

      PLEASE NOTE – we have not personally tested on medical marijuana, however, these are the recommendations we’ve received from growers, so you may follow application directions at your own risk.

      • Marty August 11, 2018 at 12:32 am - Reply

        First off i’d like to thank Plant Dr. for advising us of how much of the solution to administer when applying a “soil drench”. I couldn’t find that information anywhere on the website and i took that literally. I mixed it at 3 tsp per gal just like they recommend above and applied it as if i were watering my plants. They really need to be more clear about what they consider a soil drench to be. The definition of drench is (wet thoroughly; SOAK) that’s what i did and it resulted in what i believe to be phytotoxicity of my plants. (Correct me if i’m wrong). Please add a recommended amount of mixed solution to apply to each plant in the recommendations so this doesn’t happen to others. Thanks.

        • Plant Dr. August 13, 2018 at 11:40 am - Reply

          Marty,

          We apologize for this inconvenience.

          Thank you

    • Colin July 11, 2018 at 6:55 pm - Reply

      I have used plant dr at 15ml/gal weekly in hydro and in smartpots in the greenhouse and have never had a problem like this. Did you happen to spray anything w/in the couple days you did your drench? All other environmental conditions on point? Did you already have fusarium or a type of rhizoctonia when you gave them the PD?
      I have seen pythium/fusarium/rhizoctonia strait up kill plants in a matter of a few days. I haven’t seen much else just drop plants like in your description.
      I have kept pythium at bay, after having plant death, w plant dr for weeks on end and still pulled an average harvest for the flower room they were in. So I kinda swear by this stuff.
      The 15ml/gal and 17.5ml/gal I have used successfully. Even though the EC of the solution seems outrageous. (3.0+) I still have had no ill effects, this doesn’t mean that whatever strain you are growing couldn’t handle an EC that high. That is possible. I grow mostly kush varieties and glue. They seem to handle it just fine. Even when plants are just out of their clone size and moving up for the first time. Still no problems. I love plant dr and it’s one of my favorite IPM weapons as a farmer.

      • Ben July 29, 2018 at 1:18 pm - Reply

        Hi,
        For your greenhouse smartpots, you say you added 15mL/gal. How many gallons do you apply each time you treat them. I’m about to try the soil drench for the first time to prevent pythium and hopefully powdery mildew as well. I was thinking more like a total of 1 mL of Pant Doctor per plant for each treatment. Thanks.

        • Plant Dr. July 30, 2018 at 4:13 pm - Reply

          Ben,
          Can you please let us know what plant/s you are treating?

          Thank you.

          • Ben July 30, 2018 at 4:20 pm

            I’m treating cannabis.

          • Plant Dr. July 30, 2018 at 4:57 pm

            Ben,

            Plant Doctor Application for Medical Marijuana:
            Please note – we have not personally tested on medical marijuana, however, these are the recommendations we’ve received from growers, so you may follow application directions at your own risk.

            Downy / Powdery Mildew:
            Foliar Application:
            Cure Mildew: 1-2 TBSP per gallon weekly for mildew until clear then prevention.
            Prevention: ½ tsp per gallon weekly

            Soil Drench
            Cure Mildew: 3 tsp per gallon weekly for 3 weeks or until mildew clears. Must be used separately in reservoir for 1 day (no other nutrients), because plant doctor will increase PPM and EC (electrical conductivity) of water. Drain reservoir and continue with normal feeding program.
            Prevention: ½ tsp per gallon weekly

            Fusarium:
            Soil Drench
            3½ tsp per gallon weekly for 3 weeks or until it clears then prevention ½ tsp per gallon weekly.
            Must be used separately in reservoir for 1 day (no other nutrients), because plant doctor will increase PPM and EC (electrical conductivity) of water.
            Drain reservoir and continue with normal feeding program.

            Plant Doctor will not harm beneficial bacteria or mycorrhizae fungi.
            It is formulated to target only pathogenic fungi.

            Thank you.

          • Ben July 30, 2018 at 5:38 pm

            That doesn’t answer my question. If I add 3 tsp to 1 gallon of water, how much of that solution to I add to the plant in a 10 gal smartpot? The entire gallon? A better way to put it is, how much Plant Doctor does each plant get? Thank you.

          • Plant Dr. July 31, 2018 at 4:53 pm

            Ben,

            Our apologies if you felt your question was not answered.

            When using a soil drench, you would typically use no more than one cup of the mixture for a mature plant.

            The concept of getting a systemic fungicide into the soil is simply pouring a sufficient amount to get to the root system.

            I hope this helps.
            Thank you.

      • Marty August 11, 2018 at 12:40 am - Reply

        Colin, the only thing i’ve ever sprayed on my plants is neem oil and i had not sprayed them within 2 weeks of applying PD and i have never had ANYTHING like this happen before. I think what occurred is referred to as phytotoxicity. Im really confused as to how you could get away with using it at that rate in hydro with the roots directly in the solution for 24 hrs. Especially since they said you would typically use no more than a cup. It seems like your plants would absorb more of it than mine did resulting in the same adverse effects… BTW it was Cookies Kush that i was growing.

    • A.J. August 8, 2018 at 9:15 pm - Reply

      Marty, did leaves turn brown as if the roots were dying off as a result of the product or brown crisp drying as if fertilizer burn? The high EC of the product compounded on your current levels sounds like it could have been too much salt in the root zone depending how much you applied. Thanks for asking the question on quantity used, that really helps avoid adding too much creating a possible imbalance.

      • Marty August 11, 2018 at 12:43 am - Reply

        AJ, I think you’re right! I think it was phytotoxicity due to the salinity of the Plant Dr. I applied approx 1/2 gal of solution mixed at 15ml (3 tsp) per gal of water. Obviously that was too much. You’re welcome. Glad i could help! Just wanted other growers to avoid the same mishap.

        • A.J. August 13, 2018 at 2:32 pm - Reply

          Thanks Marty, That’s great to know and something I’ll always consider from here on out when treating roots with any product.

  16. T. Flores June 21, 2018 at 1:25 pm - Reply

    Is Organocide Plant Doctor considered a certified “organic” treatment? I’ve seen different things online and been led to believe it is. Now I see nothing here about its use in organic gardening. I’d like to return the product if it cannot be used as an organic treatment for brown rot and other fungi on my cherry tree.

    • Plant Dr. June 22, 2018 at 3:13 pm - Reply

      T. Flores,

      Plant Doctor is a systemic fungicide, it is not organic.
      However, it is environmentally responsible, especially when compared to the harsh chemical alternatives.

      Plant Doctor is an EPA regulated product made from phosphites. The Plant Doctor treats pathogenic fungus through a systemic procedure and does not work on any type of insect. When a plant absorbs the readily available phosphite it triggers the plants defense mechanisms allowing it to defend its self from harm; similar to how a vaccine works on a human.

      PLANT DOCTOR is both a preventative and curative.
      It will control pythium & phytophthora (root rot) as well as powdery mildew (foliar disease).
      After 14-21 days, it converts into nutritional potassium and phosphorus, that the plant consumes as nutrients and nothing is left in the ground.
      It is also a bio-stimulant; once inside the plant, it stimulates the plant’s metabolism resulting in more plant vigor, increase bloom and crop yield, and increasing stress resistance.

      Thank you.

  17. Rita J Young June 10, 2018 at 4:08 pm - Reply

    Will Organocide help with several different problems (spotted leaves, discolored yellow leaves, mealy bugs, etc.) on the leaves of a newly planted magnolia tree?

  18. Dorothy Grosse May 7, 2018 at 11:09 am - Reply

    I have bought your Oranocide plant doctor to spray my ornamental shrubs. Do not know the name because they were here when we bought house. I have black leaf spots on them. Your container instructions do not provide ratio for shrubs. Please inform me how much I should use and how often to get rid of this fungus. Thank you kindly. Any information concerning this would be helpful

    • Plant Dr. May 7, 2018 at 4:58 pm - Reply

      Dorothy,
      Plant Doctor is a systemic fungicide can be sprayed directly on the foliage or applied to the root zone.
      After initial application, a systemic product will rapidly absorb and then work throughout the entire plant. Other fungicides are contact fungicides: the product must make direct contact with the disease area in order to effectively treat the disease. Since the plant you have is not listed on the label, we suggest you follow the lowest dose advised. Foliar spray at the rate of 2-4 tsp of Plant Dr. per gallon of water, we suggest start at the lowest dose. 7 to 14 days, repeat if required. You can also do a soil drench at the rate of 1/8 tsp of Plant Dr. per gallon of water. It will take at least 2.5 hours for plant to absorb the product, once per month.

      Thank you.

  19. Bruce Koerber April 16, 2018 at 8:59 am - Reply

    Plant Doctor,
    Will this product prevent clematis leaf spot by the soil drench method? If so, how much per plant and how often?

    • Plant Dr. April 16, 2018 at 4:41 pm - Reply

      Dear Bruce,

      Yes, you can apply as a soil drench as Plant Doctor is systemic, this Fungicide moves through the entire plant to treat disease. We have no specific testing on clematis leaf spot, but we are confident it will help the overall health of your plant. We would love your feedback!

      Please follow the label for a similar condition.

      Apply ORGANOCIDE PLANT DOCTOR™ by various application methods,
      including foliar spray, soil drench, soil incorporation, basal bark application
      and bare root dip.
      When applying ORGANOCIDE PLANT DOCTOR™ to plant species for the
      first time, spray a limited number of plants first and wait for 3-7 days. Then
      check for leaf burn (phytotoxicity).
      MIXING INSTRUCTIONS
      1. Fill the spray tank with ¼ – ½ of the volume of water required before
      adding ORGANOCIDE PLANT DOCTOR™
      2. Add ORGANOCIDE PLANT DOCTOR™ slowly to the tank and agitate
      3. Fill tank with balance of water to the desired volume
      4. Agitate during application

      Thank you.

  20. Colin January 23, 2018 at 7:49 pm - Reply

    Fungus Gnats x pythium or phytophthora.

    A lot of times one comes w the other. Is the plant doctor able to be mixed w other ‘cides such as azidirachtin (azatrol/azamax) in order to cure pythium or root rot while simultaneously slowing down fungus gnat larvae? This is in regards to medical marijuana in a hydro rockwool set up.

    • Plant Dr. April 19, 2018 at 3:42 pm - Reply

      Dear Colin,

      Plant Doctor is both curative and preventative for Pythium and Phytophora. No need to use another product with it.

      Thank you.

  21. Scott Riggs January 18, 2018 at 6:03 pm - Reply

    How would you administer this product to marijuana for root rot on a soil drench?

  22. Logan December 20, 2017 at 4:44 pm - Reply

    Hello, could plant dr help push plants through tobacco mosaic virus? Or DUDS virus?
    I saw it help terminate Pythium, and fuserium
    Thanks

    • Plant Dr. April 19, 2018 at 3:45 pm - Reply

      Dear Logan,

      It is possible that Plant Doctor can help push plants through tobacco mosaic virus or DUDS virus but it has never been tested on these diseases for efficacy.
      You may want to do a test plot on a small area and wait 36 hours before doing it on the rest of the plants.

  23. Richard August 9, 2017 at 8:44 am - Reply

    What does this FAQ mean

    “Can Plant Doctor be used with fertilizers?

    You can add nutrients along with Plant Doctor in the following order.
    1. Fill your container half full of water and add the other nutrients – mix well.
    2. Add the Plant Doctor – mix well.”

    Is the plant doctor in this case a diluted solution to fill the remaining half of the container, and should the plant doctor concentrates and nutrient concentrate be added to treat half the container, or all of it.

    • Plant Dr. August 9, 2017 at 11:21 am - Reply

      The Plant Doctor can be added at the recommended rate on the label to the water.
      Add the Plant Doctor after adding the fertilizer.

      Please do not hesitate to ask any additional questions.

      • Richard August 10, 2017 at 10:47 pm - Reply

        Thank you.
        Why only half full?

        • Plant Dr. August 11, 2017 at 11:38 am - Reply

          As long as your following the label instructions, you can make the container full.

  24. Bill July 16, 2017 at 9:17 am - Reply

    What concentration should I use to soil drench a large Crepe Myrtle for black spot and how often should I repeat?

    • Plant Dr. July 17, 2017 at 8:58 am - Reply

      For Soil Drench – 1/8 tsp. per gallon of water

      Apply each gallon of solution to an area of 4 square feet. Follow application with irrigation. Repeat as required. Limit of one application per month.

      It should be applied early morning or late evening. There is very little risk of leaf burn when applied to plants, when used as directed. Do not freeze or spray in temperatures over 95°F.

      Please do not hesitate with any additional questions.

  25. Curtis July 6, 2017 at 7:27 pm - Reply

    Will plant doctor organicide harm mycorrhizae?

    • Plant Dr. July 7, 2017 at 9:11 am - Reply

      Plant Doctor will not harm beneficial bacteria or mycorrhizae fungi.
      It is formulated to target only pathogenic fungi.

  26. Pat June 19, 2017 at 9:59 pm - Reply

    Will this product work on Apple scab or anthracnose on Apple trees? How is it applied for the best results? Large tree

    • Plant Dr. June 21, 2017 at 9:01 am - Reply

      Yes, Plant doctor will work on apple scab. There are two application rates.

      Per the label instructions:

      Foliar Spray – 3 to 4 tsp. per gallon of water
      First application at open cluster. Last application at fifth cover or fruit at 2″ to 2½” diameter. Total of 10 applications at 10 to 12 day intervals. When conditions are conducive to a black spot outbreak, apply ORGANOCIDE PLANT DOCTOR™ immediately. Note: After 4 or 5 consecutive applications some yellowing of extension growth may be observed. If yellowing occurs use another fungicide until yellowing of leaves disappears.

      For bark application:
      Basal bark spray apply early spring at bud swell or at silver tip stage of growth. 16 fl. oz. + 16 fl. oz. of water + 1 fl. oz. Pentra- Bark™ Bark Penetrating Surfactant.

      Spray a combination of ORGANOCIDE PLANT DOCTOR™ and Pentra- Bark™ around the complete circumference of the tree trunk until saturation/runoff. Spray from ground level up to 5 feet above the soil line, including the base of the first scaffolding limbs, if present (treatment generally lasts 8-12 weeks depending on pathogen levels. Higher disease pressure will shorten the length of control). Various types of application equipment can be used such ashydraulic sprayers, handheld pump-type sprayers, backpack sprayers, hose-end applicators with back flow prevention devices, and other similar application devices.

      It should be applied early morning or late evening. There is very little risk of leaf burn when applied to plants, when used as directed. Do not freeze or spray in temperatures over 95°F.

      During the summertime temperatures can stay above 95 degrees. During this time, we recommend spraying at night when there are cooler temperatures and the product has time to dry.

      Please do not hesitate to reach out again with additional questions.

      We look forward to hearing your results.

  27. terpsucka June 3, 2017 at 11:56 am - Reply

    I asked about treating Cherry Leaf Spot on the 3-in-1 FAQ and was advised to use Plant Doctor. I purchased plant doctor, but the label doesn’t advise how to treat this problem. How much should I use, what time of day and of year, and by what method?

    • Plant Dr. June 5, 2017 at 8:22 am - Reply

      Organocide has never been tested or studied on this particular disease. It certainly will not hurt your tree if you follow the instructions. We suggest you try on a small area of the tree first.

      We recommend 2-4 tsp. per gallon of water. Apply spray to thoroughly wet all foliage. Application intervals: 7 to 14 days
      Repeat as required.

      It should be applied early morning or late evening. There is very little risk of leaf burn when applied to plants, when used as directed. Do not freeze or spray in temperatures over 95°F.

      If you don’t get the results you are trying to achieve, please reach out to your local extension service for further assistance.

      Please do not hesitate to reach out again with additional questions.

  28. dennis k. May 16, 2017 at 3:43 pm - Reply

    can you spray medical marijuana flowers with 3 in 1 organocide?

    • Plant Dr. May 16, 2017 at 3:53 pm - Reply

      We want to thank you for writing to us and for viewing our website.

      You can use Organocide 3 in 1 Garden Spray if your treating for one of the following: It kills the eggs, larvae, nymphs and adult stages of over 25 soft bodied insects including (but not limited to) aphids , chinch bugs , citrus rust mites, flea egg & larvae, fuchsia mites, fungus gnats , hemlock wooly adelgid, leaf-rollers, mealy bugs, psyllids, scale , spider mites, thrips, and whiteflies.

      Please follow the product label for application rate and apply Organocid during early morning or late evening. Do not freeze or spray in temperatures over 95°F.

      Please do not hesitate to reach out again with additional questions.

  29. Terri T May 13, 2017 at 5:09 pm - Reply

    I asked a question on Google as to whether Hi-Yield vegetable, flower and ornamental fungicide could be sprinkled directly on my tomato plants. I hope that’s true because I did it earlier today as protection from whatever. Please let me know as soon as possible. I don’t want to lose these plants. I lost all of of them last year due to green worms. I know that’s a different problem, but I’m trying so hard to take good care of them.

    Thank you

    • Plant Dr. May 16, 2017 at 8:06 am - Reply

      We want to thank you for writing to us and for viewing our website.

      We recommend contacting your local extension service, they can diagnose what’s going on with your plant. That will help us determine if we have anything that can help.

      Please do not hesitate to reach out again with additional questions.

  30. Maria April 14, 2017 at 7:19 pm - Reply

    Can 3 in 1 Garden Spray be used on orchids to combat scale. What else will it combat. If mixed with fertilizer how much garden spray to a gallon? Also, can it also be a preventive treatment for scales? Please respond. I’m a little hesitant to use this on orchids. Also, what is the difference between this product and Safer Insect Killing Soap Concentrate? Thank you for your response.

    • Plant Dr. April 17, 2017 at 9:15 am - Reply

      We want to thank you for writing to us and for viewing our website. We appreciate your questions and feedback.

      Orchids are sensitive.
      This should be tested on a small area first to determine sensitivity.
      We do not have scientific data to support usage on orchids.

      Mix 3oz per gallon as per instructions on the current label.

      The difference is ours is organic and won’t harm beneficial insects such as honey bees and butterflies.

      If you have any questions please feel free to contact us again.

      Thanks so much for using our products and for your referrals!
      We are proud to be a leading producer of earth friendly pesticides and fertilizers.

  31. Herb March 21, 2017 at 1:42 pm - Reply

    Can Plant Doctor be used in controlling apple scab and if so, how often does it need to be applied?

    • Plant Dr. March 30, 2017 at 1:31 pm - Reply

      Yes it will. Please download our product label for application directions.

      • Jake June 13, 2017 at 12:31 pm - Reply

        I hope to do a soil drench for controlling apple scab (foliar spray is a bit too much of an undertaking). What would you recommend for a mixture ratio in water?

        • Plant Dr. June 13, 2017 at 2:06 pm - Reply

          Since this is off the label. We recommend using the lowest application for soil drench. The rate is 1/8 tsp per gallon of water.

          Hope this helps.

          Please do not hesitate to reach out again with additional questions

  32. Glenn July 24, 2016 at 5:58 pm - Reply

    How long until squash may be eaten after foliar application?

    • Plant Dr. August 9, 2016 at 2:48 pm - Reply

      We want to thank you for writing to us and for viewing our website. We appreciate your questions and feedback.

      There is no re-entry time after application and plants can be harvested right after spray.
      Organocide is made up of all food-grade oils.

      Thanks so much for using our products and for your referrals!
      We are proud to be a leading producer of earth friendly pesticides and fertilizers.

  33. Michael Volk February 28, 2016 at 4:28 pm - Reply

    Can you tell me what the shelf life is of Plant Doctor? I bought some in the Spring 2015. The product is excellent, I have used it before.

    • Plant Dr. March 29, 2016 at 3:01 pm - Reply

      Hello Michael,

      Plant Doctor concentrate will not expire. Shake well after it’s been stored properly before diluting.

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