---
product_id: 620289637
title: "Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz"
brand: "sierra natural science"
price: "$U1331"
currency: UYU
in_stock: true
reviews_count: 8
category: "Sierra Natural Science"
url: https://www.desertcart.uy/products/620289637-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz
store_origin: UY
region: Uruguay
---

# 100% pure rosemary & clove botanical extracts Concentrated 1.25 fl oz makes up to 32 fl oz EPA exempt, OMRI organic approved Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz

**Brand:** sierra natural science
**Price:** $U1331
**Availability:** ✅ In Stock

## Summary

> 🌱 Defend your garden naturally—because your plants deserve the best!

## Quick Answers

- **What is this?** Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz by sierra natural science
- **How much does it cost?** $U1331 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/620289637-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz)

## Best For

- sierra natural science enthusiasts

## Why This Product

- Trusted sierra natural science brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Pest Control:** Effective against root and stalk insects, fungus gnats, shore flies, and more.
- • **Zero Downtime Protection:** Use up to harvest with 0-Day REI—keep your plants pest-free without waiting.
- • **Powerful Botanical Defense:** Harnesses pure rosemary & clove oils to dehydrate pests and combat fungus & algae.
- • **Ultra-Concentrated Formula:** Just 1.25 fl oz transforms into 32 fl oz of potent plant protection—maximize every drop.
- • **Safe for Your Whole Home Garden:** EPA exempt and OMRI certified, safe around kids and pets when used as directed.

## Overview

Sierra Natural Science 203 Concentrate is a highly effective, organic pest and fungus control solution made from 100% pure rosemary and clove botanical extracts. This EPA exempt, OMRI certified concentrate dehydrates pests and attacks fungus and algae, protecting plants safely up to harvest with zero waiting time. Its ultra-concentrated formula (1.25 fl oz makes 32 fl oz) ensures maximum value and versatile use for both indoor and outdoor gardening.

## Description

High moisture levels in soils and around pots encourage the development of fungus gnats, shore flies and other pests. When this occurs, plants will be stunted with reduced growth and leaf drop. 203 has active ingredients that cause pests to dehydrate and die while also, attacking fungus and algae, reducing the food source for pests. 203 is made up of 100% pure rosemary & clove botanical extracts highly water soluble. We process raw certified organic botanicals and herbs in-house, ensuring oils and terpenes have a consistent potency across all of our products. The botanical extracts are all food grade GRAS (generally recognized as safe when used as directed) materials, that are fully biodegradable, and not toxic to animals. It is exempt from EPA registration under minimum risk pesticide exempted under FIFRA section 25(b). It can be used on a wide variety of plants, fruits, and vegetables.

Review: Keeping my indoor houseplant collection in great health. - I use it as a preventative measure. It helps me to save my plants from any above-ground pests (when used as a foliar spray) and in-ground, too (soil drench). I add a small amount with every other watering. Works for plants in leca.
Review: IPM Program - Wonderful product for commercial and home growers. This is my go too product to keep my garden and plants safe from pests.

## Features

- Dehydrates & kills pests and attacks fungus & algae
- Fights against insects that feed on your plants roots & stalks
- Can be used up to harvest (0-Day REI)
- EPA Exempt Fifra 25 (b)
- Safe around children & pets when used as directed
- OMRI and Organic gardening approved!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSHGSMCB |
| Active Ingredients | Clove Oil, Rosemary |
| Best Sellers Rank | #57,643 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #221 in Insect & Pest Repellent Spray Concentrates |
| Brand | Sierra Natural Science |
| Customer Reviews | 4.2 4.2 out of 5 stars (232) |
| Item Form | Oil |
| Item Weight | 1.06 ounces |
| Item model number | 31635 |
| Liquid Volume | 1.25 Fluid Ounces |
| Manufacturer | Sierra Natural Science |
| Package Dimensions | 5.94 x 5.04 x 0.43 inches |
| Specification Met | EPA, OMRI |
| Target Species | Fungus |
| UPC | 850046870071 |

## Product Details

- **Active Ingredients:** Clove Oil, Rosemary
- **Brand:** Sierra Natural Science
- **Item Form:** Oil
- **Liquid Volume:** 1.25 Fluid Ounces
- **Specification Met:** EPA, OMRI

## Images

![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz - Image 1](https://m.media-amazon.com/images/I/51P9F833LLL.jpg)
![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz - Image 2](https://m.media-amazon.com/images/I/614WufJLgbL.jpg)
![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz - Image 3](https://m.media-amazon.com/images/I/61HS4hVUIqL.jpg)
![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz - Image 4](https://m.media-amazon.com/images/I/51iG7lGkleL.jpg)
![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz - Image 5](https://m.media-amazon.com/images/I/51cX3NcolDL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Keeping my indoor houseplant collection in great health.
*by A***A on January 20, 2024*

I use it as a preventative measure. It helps me to save my plants from any above-ground pests (when used as a foliar spray) and in-ground, too (soil drench). I add a small amount with every other watering. Works for plants in leca.

### ⭐⭐⭐⭐⭐ IPM Program
*by L***N on September 3, 2023*

Wonderful product for commercial and home growers. This is my go too product to keep my garden and plants safe from pests.

### ⭐⭐⭐⭐⭐ fast delivery
*by J***F on March 29, 2022*

Much cheaper than I could find locally. Works great.

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-20*