24 oz. Ready-to-Use


Grower’s Ally Fungicide is an OMRI Listed® fungicide and bactericide for use on cannabis and hemp. Formulated with food-grade citric acid, Grower’s Ally foliar spray tests clean and is proven to kill and prevent common plant pathogens, including powdery mildew. Trusted by large scale growers for use in the flowering stage and suitable for all grow environments and cultivation facilities: indoor, outdoor, greenhouse, hydroponic.

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  • 24 fl. oz. of Grower’s Ally Fungicide
  • Ready-to-use, no dilution required


  • Maximize Yields: Grow healthier cannabis and hemp with Grower’s Ally Fungicide. Kills and prevents common plant pathogens, including powdery mildew.
  • Zero Pollutants: Tests clean and contains no residual solvents, no synthetic pesticides and no heavy metals. Exempt from EPA registration under FIFRA 25(b) and OMRI Listed® for use in organic gardening.
  • Harvest Same Day: Can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur. Trusted by large scale growers and suitable for use in all cultivation facilities.


  • OMRI Listed®
  • FIFRA 25(b) Exempt
  • Zero REI
  • No PPE Required
  • No Reported Phytotoxicity
  • Bee Safe® when used as directed
  • Made in the USA



  • Active Ingredients: Citric Acid 0.02%
  • Inert Ingredients: Water, Lactose, Ethyl Lactate, Potassium Sorbate, Sodium Benzoate, Sodium Acetate
  • View the label and SDS sheet


The citric acid formulation in Grower's Ally Fungicide forms a protective barrier on the leaf surface that inhibits pathogen development. When used as a preventative treatment, it has anti-fungal effects to reduce bacterial growth and prevent disease on plants.



  • Shake well before and during use.
  • Apply a fine mist to the stems and leaves, including undersides.
  • Thoroughly cover the plant until there is runoff.
  • Spray every 10 days to keep plants healthy.


  • Treat at first sign of disease.
  • Shake well before and during use.
  • Apply a fine mist to the stems and leaves, including undersides.
  • Thoroughly cover the plant until there is runoff.
  • Wait 4 hours, then repeat application a second time.
  • Repeat this process every 5 days, as needed.


  • Apply to outdoor crops in the early morning or late afternoon.
  • For indoor or hydroponic gardens, lights should be brought back on approximately 2-3 hours after application.
  • No limitations on the number of applications per growing cycle.


Highly Recommend

“I noticed a small pest issue in my indoor garden. I used Spider Mite Control. After, I noticed I hadn’t seen any pest in a few days. I continued to treat and haven’t seen a pest since. I highly recommend this product.”


Very Effective

“I’m growing 100% organic and used the Grower’s Ally Spider Mite Control in the beginning of the spring season. The rosemary oil was very effective at killing spider mites."


Fungicide Is My Go-To

"Grower's Ally Fungicide is my go-to for knocking out powdery mildew. The plants react incredibly to the applications. Happy, healthy, and no powdery mildew."


Simple To Use

"The formulas are simple to use, and my rooms smell amazing after using the Spider Mite Control because of the essential oils present in the formula."


Love This Stuff

“My plants seem to love this stuff. I have bought both the spider mite and the fungicide. I'm on my 2nd application. No adverse reactions, no signs of mites or mildew.”


Saved Our Grow

“Spider Mite Control saved our grow and allowed us to have a good harvest. We are highly satisfied with your product and look forward in doing business in the future.”


Backbone To My IPM

"Grower's Ally Spider Mite Control is a must have for extremely effective preventative and reactive plant maintenance. Most importantly I can use it in all phases. It is the backbone to my IPM."