---
product_id: 435472991
title: "Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons"
brand: "grower's ally"
price: "2627483₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Grower's Ally"
url: https://www.desertcart.vn/products/435472991-growers-ally-crop-defender-3-concentrate-natural-miticide-insecticide-fungicide
store_origin: VN
region: Vietnam
---

# Triple-action botanical formula 8 oz concentrate makes 25 gallons OMRI Listed & FIFRA 25(b) exempt Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons

**Brand:** grower's ally
**Price:** 2627483₫
**Availability:** ✅ In Stock

## Summary

> 🌱 Defend your garden like a pro—natural power, zero compromise!

## Quick Answers

- **What is this?** Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons by grower's ally
- **How much does it cost?** 2627483₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/435472991-growers-ally-crop-defender-3-concentrate-natural-miticide-insecticide-fungicide)

## 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

- • **Concentrated Value:** Small 8 oz bottle dilutes to 25 gallons—big coverage, less waste
- • **Maximize Your Harvest:** Effective weekly use from clones to flowering for unstoppable crop protection
- • **Organic & Eco-Friendly:** OMRI listed, zero synthetic chemicals, safe for kids, pets & pollinators
- • **Trusted by Cultivators:** Proven in indoor, outdoor, greenhouse & hydroponic setups for total peace of mind
- • **Triple-Action Pest Defense:** Miticide, insecticide & fungicide in one powerful, natural spray

## Overview

Grower's Ally Crop Defender 3 Concentrate is a potent, triple-action natural spray combining miticide, insecticide, and fungicide properties. OMRI listed and FIFRA 25(b) exempt, it’s safe for organic gardening and non-toxic to kids, pets, and pollinators. This 8 oz concentrate makes up to 25 gallons of broad-spectrum plant protection, effectively controlling powdery mildew, mites, aphids, thrips, and more throughout all growth stages. Trusted by cultivators across indoor, outdoor, greenhouse, and hydroponic environments, it delivers reliable, eco-friendly pest and disease control to maximize your yields.

## Description

Crop Defender 3 Visit the Store Crop Defender 3 Visit the Store Fungicide Visit the Store Fungicide Spider Mite Control Visit the Store Spider Mite Control Can I apply Grower’s Ally formulas in flower? Grower’s Ally can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur. When is the best time to spray? We recommend applying to outdoor crops in the early morning or late afternoon. For indoor grows, turn lights and fans off prior to application. Leave off for 2-3 hours after application. Can I apply up till day of harvest? Yes, Grower's Ally can be safely applied up till day of harvest. For fresh frozen, stop application 72 hours prior to harvest. Can I apply Grower’s Ally formulas in flower? Grower’s Ally can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur. When is the best time to spray? We recommend applying to outdoor crops in the early morning or late afternoon. For indoor grows, turn lights and fans off prior to application. Leave off for 2-3 hours after application. Can I apply up till day of harvest? Yes, Grower's Ally can be safely applied up till day of harvest. For fresh frozen, stop application 72 hours prior to harvest.

Review: Very Effective Plant Protection - I've been having issues with spider mites on an indoor garden. I've tried multiple organic & DIY solutions which helped but never really eradicated them even accounting for egg hatch cycle & dormant time. I'd have to do multiple applications every 1-2 weeks to keep them at bay. So it was worth trying Crop Defender. I used one application of Crop Defender at the 'elimination' concentration level (vs preventative). It's now been over two weeks and no signs of any spider mites or other pests. That's a big win for protecting the plants from pests but also fungus/mildew. While the bottle is small (8 oz), it's concentrated & diluted in water so will last lots applications making the price worth the cost. It sprayed easily from a 1/2 gal hand held sprayer. Any remaining solution can be saved for the next application according to the instructions on the bottle (though probably won't be as effective over a long storage period of time). All the ingredients are organic making it safe to use for people & pets. Very happy to have finally got the upper hand on the spider mites.
Review: Very good - The stuff really works good on bugs

## Features

- MAXIMIZE YIELDS – Grower’s Ally Crop Defender 3 is a highly effective triple-action crop protection formula intended for weekly use to kill powdery mildew, spider mites, russet mites, thrips, aphids and other soft-bodied insects as well as their eggs on contact.
- TRIPLE-ACTION FORMULA – Formulated with a synergistic blend of botanical oils and a surfactant built in, Crop Defender 3 is a miticide, insecticide and fungicide for weekly use to prevent common pests.
- ZERO POLLUTANTS – Grower’s Ally is FIFRA 25(b) exempt and OMRI Listed for use in organic gardening. Crop Defender 3 plant spray tests clean and contains no residual solvents, no synthetic pesticides, and no heavy metals.
- HARVEST SAME DAY – Our broad-spectrum plant protection formula can be safely applied through all stages of plant growth, from clones through the flowering cycle when many problems occur.
- RECOMMENDED BY CULTIVATORS – This all-purpose plant care solution is proven effective in indoor, outdoor, greenhouse, and hydroponic facilities. Eco-friendly and formulated to be bee-safe and suitable for use around kids and pets.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Y17M44W |
| Active Ingredients | Thyme Oil, Rosemary Oil, Clove Oil, Peppermint Oil |
| Best Sellers Rank | #8,492 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #68 in Insect & Pest Repellent Spray Concentrates |
| Brand | Grower's Ally |
| Brand Name | Grower's Ally |
| Customer Reviews | 4.5 out of 5 stars 906 Reviews |
| Included Components | bottle |
| Item Form | Liquid |
| Item Weight | 9.1 Ounces |
| Liquid Volume | 25 |
| Manufacturer | Sarasota Green Group |
| Specification Met | OMRI |
| Target Species | Insects, Plant Pathogens, Fungus |
| UPC | 810021610344 |
| Unit Count | 8.0 Fluid Ounces |

## Product Details

- **Active Ingredients:** Thyme Oil, Rosemary Oil, Clove Oil, Peppermint Oil
- **Brand:** Grower's Ally
- **Item Form:** Liquid
- **Item Weight:** 9.1 Ounces
- **Liquid Volume:** 25

## Images

![Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons - Image 1](https://m.media-amazon.com/images/I/51OpgTKLsqL.jpg)
![Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons - Image 2](https://m.media-amazon.com/images/I/81LVkZ-2ViL.jpg)
![Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons - Image 3](https://m.media-amazon.com/images/I/71dTiz2ZhoL.jpg)
![Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons - Image 4](https://m.media-amazon.com/images/I/711VIndm6jL.jpg)
![Grower's Ally Crop Defender 3 Concentrate - Natural Miticide, Insecticide, Fungicide Control for Plants - OMRI Listed Garden Safe Spray Killer for Powdery Mildew & Mites - 8 Oz, Makes 25 Gallons - Image 5](https://m.media-amazon.com/images/I/71sJBrl7ZAL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does it kill fungus gnats?**
A: Yes - Grower's Ally Crop Defender 3 is highly effective at killing and repelling fungus gnats.  Keep in mind that fungus gnats come out of the soil, so infestations can continue even after killing the fungus gnats that are above the soil.  This product can be used as a soil drench, but it may struggle to kill fungus gnats that are deep in the soil.

**Q: Does this kill leaf blight on strawberries?  If not, are there any funguses besides powdery mildew that it's good against?**
A: Yes - Grower's Ally Crop Defender 3 will treat and prevent leaf blight on strawberries.  Crop Defender 3 is a 3-in-1 (miticide / insecticide / fungicide).  It's highly effective on most common garden fungus, bacteria, spot, canker, blight...  It's also highly effective for killing and repelling most small soft-bodied insects, such as mite, white flies, aphids, thrips, mealy bugs, scale insects...

**Q: Can I use this for prevention or is this only a treatment after I have one of the listed problems?**
A: Crop Defender 3 can be used as a preventative treatment (spraying every 7 days) or to treat infestations (spraying every 3 days until the pest is under control).

**Q: If I make a gallon and only use half, can i store the mixed stuff for a week or so?**
A: Yes - mixed product is good for months.  Store with the sprayer closed (but not under pressure if using a pump sprayer).  Give the sprayer a gentle shake before spraying, and you'll be all set.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very Effective Plant Protection
*by C***T on November 19, 2025*

I've been having issues with spider mites on an indoor garden. I've tried multiple organic & DIY solutions which helped but never really eradicated them even accounting for egg hatch cycle & dormant time. I'd have to do multiple applications every 1-2 weeks to keep them at bay. So it was worth trying Crop Defender. I used one application of Crop Defender at the 'elimination' concentration level (vs preventative). It's now been over two weeks and no signs of any spider mites or other pests. That's a big win for protecting the plants from pests but also fungus/mildew. While the bottle is small (8 oz), it's concentrated & diluted in water so will last lots applications making the price worth the cost. It sprayed easily from a 1/2 gal hand held sprayer. Any remaining solution can be saved for the next application according to the instructions on the bottle (though probably won't be as effective over a long storage period of time). All the ingredients are organic making it safe to use for people & pets. Very happy to have finally got the upper hand on the spider mites.

### ⭐⭐⭐⭐⭐ Very good
*by K***O on May 17, 2026*

The stuff really works good on bugs

### ⭐⭐⭐⭐⭐ Search no more! This stuff is all you need for garden problems
*by C***R on June 26, 2024*

I have bought 2-3 of the spray bottles and finally got the concentrate because I will continue using it for EVERYTHING from aphids to powdery mildew. It works quickly (you may not even need to reapply in the 3 days they say to wait; I did not need to reapply like I have with every other product!). Seriously, throw out all your other fungicides/insecticides because this product is the only thing you’ll need. I was so surprised when it effectively got rid of a yearly spring aphid problem on a Clematis and did not torch my plant as many other products have. I just spoke with a very helpful Grower’s Ally rep. who explained how the product works, gave me mixing ratios for infestation and for prevention and was super helpful (thank you, Scott!). I am hoping I won’t see my end of summer/start of fall powdery mildew but now I am armed with the best product I’ve used in 20+ years of gardening. I personally like the smell but he said it goes away in 3 days. Another bonus: unlike Neem, Crop Defender3 is not systemic (it doesn’t enter the vascular system of your plant—how great!). This is the kind of stuff that I’d buy no matter how much it costs. Buy the concentrate because you will use this product forever!!

## Frequently Bought Together

- Grower's Ally Crop Defender 3 Concentrate 8 oz | Natural, Safe & Organic Insecticide & Fungicide Control for Plants - Powdery Mildew, Spider Mites & Russet Mite Killer – Makes 25 Gallons
- Grower's Ally Fungicide for Plants Concentrate 32 oz | Plant Fungicide Treatment Control for Powdery Mildew, Fungus and More - Trusted by Cultivators for Indoor & Outdoor Use, Makes 20 Gallons
- Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-08*