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

36 Comments

  1. 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?

  2. 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.

  3. 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.

  4. 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.

  5. 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?

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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

  16. 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.

  17. 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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