---
product_id: 187055372
title: "Fungicide Spray for Plants - Ready-to-Use Indoor Outdoor Plant Fungicide Treatment for Powdery Mildew, Alternaria Blight, Rot, Fungus - OMRI Listed, Trusted by Cultivators - 24 Oz"
brand: "grower's ally"
price: "200 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Grower's Ally"
url: https://www.desertcart.ro/products/187055372-fungicide-spray-for-plants-ready-to-use-indoor-outdoor-plant
store_origin: RO
region: Romania
---

# Broad-spectrum plant protection Food-grade citric acid formula OMRI Listed & eco-friendly Fungicide Spray for Plants - Ready-to-Use Indoor Outdoor Plant Fungicide Treatment for Powdery Mildew, Alternaria Blight, Rot, Fungus - OMRI Listed, Trusted by Cultivators - 24 Oz

**Brand:** grower's ally
**Price:** 200 Lei
**Availability:** ✅ In Stock

## Summary

> 🌱 Grow smart, grow safe—your plants’ best ally against disease!

## Quick Answers

- **What is this?** Fungicide Spray for Plants - Ready-to-Use Indoor Outdoor Plant Fungicide Treatment for Powdery Mildew, Alternaria Blight, Rot, Fungus - OMRI Listed, Trusted by Cultivators - 24 Oz by grower's ally
- **How much does it cost?** 200 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/187055372-fungicide-spray-for-plants-ready-to-use-indoor-outdoor-plant)

## Best For

- grower's ally enthusiasts

## Why This Product

- Trusted grower's ally brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Preventive Power:** Forms a protective citric acid barrier to stop pathogens before they start—stay ahead of disease.
- • **Pure & Safe Formula:** FIFRA 25(b) exempt with no synthetic pesticides, heavy metals, or pollutants—perfect for organic gardens.
- • **Maximize Your Harvest:** Kills & prevents powdery mildew, blight, root & stem rot for healthier, higher-yield plants.
- • **Use Anytime, Anywhere:** Residue-free spray safe for all growth stages—clones to flowering, indoors or outdoors.
- • **Trusted by Cultivators:** Recommended for hydroponic, greenhouse, and home gardens; bee-safe and kid-friendly.

## Overview

Grower's Ally Fungicide is a 24 oz ready-to-use, broad-spectrum plant fungicide formulated with food-grade citric acid. OMRI Listed and FIFRA 25(b) exempt, it effectively kills and prevents powdery mildew, alternaria blight, root, crown, and stem rot without harmful chemicals. Safe for organic gardening, it can be applied throughout all plant growth stages indoors or outdoors, trusted by cultivators for its eco-friendly, residue-free protection.

## Description

desertcart.com: Grower's Ally Fungicide Spray for Plants - Ready-to-Use Indoor Outdoor Plant Fungicide Treatment for Powdery Mildew, Alternaria Blight, Rot, Fungus - OMRI Listed, Trusted by Cultivators - 24 Oz : Patio, Lawn & Garden

Review: Good for powdery mildew - I live in the southeast U.S. where it's very humid most of the year, and powdery mildew is a constant battle. I'd tried milder DIY options (baking soda solutions) and that worked ok on some plants (like my bee balm, which the mildew seems to love) but wasn't as effective on my succulents (and not the most convenient to use, e.g. spray nozzles clogging after awhile). Decided to give this a try, and it has worked great at controlling powdery mildew on both outdoor & indoor plants. Even a single treatment (I always forget whatever short-term repeat it recommends in the directions) clears up most mildew. Some reviewers have commented about leaves falling off after using this on plants with powdery mildew-- but yeah, sounds like that's from the fungus. You're not going to restore leaf damage from powdery mildew, the goal is to prevent further damage/avoid it damaging so much foliage that it significantly harms the plant. My bee balm has had no leaf-loss issues with this. Likewise, my succulents will usually have a brown scar where the fungus was but keep those leaves (it'd make sense for a plant to drop leaves if you treated them with a pretty intense or widespread infection, as they'd no longer be much use to the plant). I also lightly spray my uninfected succulents, prophylactically (at the same dilution), and they've not suffered any ill effects from the fungicide. One caveat, I feel like a fungicide perhaps shouldn't... grow a bunch of mold? (Happened in both the spray bottle and the slightly larger bottle that I use to make the dilution, a week or two after mixing it up; both bottles had been closed in the meantime.) It may be that the fungicide is just targeted to fungi likely to affect plants rather than being a "nuke it all" approach (which would actually be a good thing IMO) or just balancing strength vs. safety for plants (and humans, other stuff in environment, etc.). Not taking off any stars as it still works well as applied to my plants right after diluting-- I'll just mix up smaller volumes at a time from now on, fresh each time I need to use it.
Review: It works! - This stuff really works! Sprayed my plant twice and plant is healthy once more!

## Features

- MAXIMIZE YIELDS – This outdoor and indoor plant fungicide kills and prevents common plant pathogens, including powdery mildew, alternaria blight root rot, crown rot, and stem rot. When unavailable, use Earth’s Ally Disease Control, which provides the same proven fungicide protection.
- ZERO POLLUTANTS – Formulated with food-grade citric-acid, our formula is FIFRA 25(b) exempt and OMRI Listed for use in organic gardening. This garden safe spray tests clean and contains no residual solvents, no synthetic pesticides and no heavy metals.
- KILLS AND PREVENTS POWDERY MILDEW – Our broad-spectrum citric acid fungicide is an effective natural disinfectant. It reduces bacterial growth yet is gentle on plant tissue. When this mildew plant spray is used preventatively, citric acid forms a protective barrier on the surface of the leaves to inhibit pathogen development.
- HARVEST SAME DAY – The residue-free fungicide spray can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur.
- RECOMMENDED BY CULTIVATORS – Used across indoor, outdoor, greenhouse, and hydroponic grow spaces. An eco-minded formula that’s bee-safe and suitable for homes with kids and pets.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081TCVFNF |
| Active Ingredients | Citric Acid |
| Best Sellers Rank | #2,199 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #310 in Pest Control Products |
| Brand | Grower's Ally |
| Date First Available | May 14, 2020 |
| Item Form | Liquid |
| Item Weight | 4.7 ounces |
| Item model number | GA-FUNGICIDE-Prnt |
| Liquid Volume | 24 Fluid Ounces |
| Manufacturer | Sarasota Green Group |
| Package Dimensions | 10.91 x 4.65 x 2.17 inches |
| Target Species | Plant pathogens |
| UPC | 810021610023 |

## Product Details

- **Active Ingredients:** Citric Acid
- **Brand:** Grower's Ally
- **Item Form:** Liquid
- **Item Weight:** 4.66 ounces
- **Liquid Volume:** 24 Fluid Ounces

## Images

![Fungicide Spray for Plants - Ready-to-Use Indoor Outdoor Plant Fungicide Treatment for Powdery Mildew, Alternaria Blight, Rot, Fungus - OMRI Listed, Trusted by Cultivators - 24 Oz - Image 1](https://m.media-amazon.com/images/I/71mhul-rH2L.jpg)

## Questions & Answers

**Q: Effective and safe against grey mold on cannabis buds?**
A: Gray mold, or botrytis, is very difficult to treat.  Grower's Ally Fungicide can help slow the spread of gray mold, but will not cure the disease or repair infected plants / buds.  Infected buds need to be removed properly, and the environment (lower humidity, increased airflow...) must be addressed first, before any product can help you.  There are many excellent articles that go into great detail about effectively treating gray mold.  We wish you the best.

**Q: Will this help leaf spots on mountain laurel?**
A: If I can sure.

**Q: Will this work for peach curl?**
A: You must use a copper based fungicide that is specifically labeled for peach or nectarines

**Q: Does this work on pachysandra blight**
A: Grower's Ally Fungicide will work to help prevent the spread of blight on pachysandra, but it will not repair parts of the plant that are already damaged.  We strongly recommend removing diseased leaves and disposing of them properly (and disinfecting your pruning tools).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for powdery mildew
*by C***E on October 4, 2025*

I live in the southeast U.S. where it's very humid most of the year, and powdery mildew is a constant battle. I'd tried milder DIY options (baking soda solutions) and that worked ok on some plants (like my bee balm, which the mildew seems to love) but wasn't as effective on my succulents (and not the most convenient to use, e.g. spray nozzles clogging after awhile). Decided to give this a try, and it has worked great at controlling powdery mildew on both outdoor & indoor plants. Even a single treatment (I always forget whatever short-term repeat it recommends in the directions) clears up most mildew. Some reviewers have commented about leaves falling off after using this on plants with powdery mildew-- but yeah, sounds like that's from the fungus. You're not going to restore leaf damage from powdery mildew, the goal is to prevent further damage/avoid it damaging so much foliage that it significantly harms the plant. My bee balm has had no leaf-loss issues with this. Likewise, my succulents will usually have a brown scar where the fungus was but keep those leaves (it'd make sense for a plant to drop leaves if you treated them with a pretty intense or widespread infection, as they'd no longer be much use to the plant). I also lightly spray my uninfected succulents, prophylactically (at the same dilution), and they've not suffered any ill effects from the fungicide. One caveat, I feel like a fungicide perhaps shouldn't... grow a bunch of mold? (Happened in both the spray bottle and the slightly larger bottle that I use to make the dilution, a week or two after mixing it up; both bottles had been closed in the meantime.) It may be that the fungicide is just targeted to fungi likely to affect plants rather than being a "nuke it all" approach (which would actually be a good thing IMO) or just balancing strength vs. safety for plants (and humans, other stuff in environment, etc.). Not taking off any stars as it still works well as applied to my plants right after diluting-- I'll just mix up smaller volumes at a time from now on, fresh each time I need to use it.

### ⭐⭐⭐⭐⭐ It works!
*by S***E on January 5, 2026*

This stuff really works! Sprayed my plant twice and plant is healthy once more!

### ⭐⭐⭐⭐ Effective garden staple
*by G***. on September 3, 2025*

This works pretty well, but like any of these sprays, it's much better proactively. Once things go bad, it's not a savior, but it should be a staple if your a grower. No harmful effects to the plant or the people spraying it. You can use a lot without any negative effects, and it is effective.

## Frequently Bought Together

- Grower's Ally Fungicide Spray for Plants Ready-to-Use 24 oz | Plant Fungicide Treatment Control for Powdery Mildew, Fungus and More - Trusted by Cultivators for Indoor & Outdoor Use, OMRI Listed
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-07*