---
product_id: 38707094
title: "Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 25 LB"
brand: "greenway biotech, inc."
price: "VT125890"
currency: VUV
in_stock: true
reviews_count: 8
category: "Greenway Biotech, Inc."
url: https://www.desertcart.vu/products/38707094-tomato-fertilizer-4-18-38-powder-water-soluble-with-chelated
store_origin: VU
region: Vanuatu
---

# 4-18-38 NPK for max fruit growth 100% water soluble, clog-free Chelated micronutrients for pH 4-9 Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 25 LB

**Brand:** greenway biotech, inc.
**Price:** VT125890
**Availability:** ✅ In Stock

## Summary

> 🍅 Grow Bold, Taste Better — The Nightshade Nutrient Revolution

## Quick Answers

- **What is this?** Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 25 LB by greenway biotech, inc.
- **How much does it cost?** VT125890 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/38707094-tomato-fertilizer-4-18-38-powder-water-soluble-with-chelated)

## Best For

- greenway biotech, inc. enthusiasts

## Why This Product

- Trusted greenway biotech, inc. brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Application:** Fully dissolves in water at room temp—perfect for drip irrigation, foliar sprays, hydroponic systems without clogging.
- • **Micronutrient Powerhouse:** Includes chelated Iron, Manganese, Zinc, Copper, Boron & Molybdenum to prevent nutrient lockout in soil & hydroponics.
- • **Certified Purity & Safety:** CDFA registered and independently tested for heavy metals, ensuring professional-grade quality and peace of mind.
- • **Versatile Garden Essential:** One formula supports all nightshade crops from heirloom tomatoes to hot peppers, made in the USA since 1989.
- • **Tailored Nightshade Nutrition:** Optimized 4-18-38 formula fuels bigger, tastier tomatoes, peppers & eggplants with high potassium and low nitrogen balance.

## Overview

Greenway Biotech's Tomato Fertilizer 4-18-38 is a professional-grade, water-soluble powder designed specifically for nightshade crops like tomatoes, peppers, and eggplants. Its high potassium and low nitrogen formula promotes larger fruit with enhanced flavor and shelf life. Enriched with chelated micronutrients, it ensures nutrient availability across a wide pH range, suitable for both soil and hydroponic systems. Independently tested and CDFA registered, this 25 lb bag delivers purity, versatility, and consistent results trusted by growers since 1989.

## Description

desertcart.com : Greenway Biotech, Inc. Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 25 LB : Patio, Lawn & Garden

Review: Great product ! - Bought this product late December 2017 along with a bag of nitrate and a carton of Epsom Salt. I am growing tomatoes in my little green house here in Orange County, CA. I use Home Depot 5 galleon buckets and fill it with pearlite. So far I am having the best success I have ever had. I am growing winter tomatoes along with Early Girl and am amazed at the amount of tomatoes and the health of the plants. No crunchy brown leaves, I take the companies suggestion to weigh the fertilizer and use,( as per the MPH Gardner formula, which is on Youtube ) 12 grams of the product along with 12 grams of the nitrate and 6 grams of Epsom Salts in 5 galleons of water....which gives you an 19-18-38 NPK. Obviously, I am very pleased and will continue to use the product to grow my veggies.
Review: My favorite so far. - I have used this for the past few months as a base for all plants in my hydroponic garden. It is easy to mix and completely dissolves without using alot of mixing. As a general nutrient, I add calcium nitrate and magnesium sulfate differently for each plant. PPM / EC results are very predictable and accurate as described on the instructions. My mixes vary from EC 0.8 to 4.5 and I can hit the mark every time. PH does not go wild with this, it usually finished between 5.8 and 6.1 using Reverse Osmosis water. I have to do very little if any adjustments to the PH. Many liquid nutrients required heavy adjustments, not this. The resealable bag is rugged and designed to stand up without tipping or ripping. They do have a bulk option which I just purchased 25 lbs of each, tomato and calcium nitrate. It's the best so far. I grow tomatoes, bell peppers, Lettuce, cucumbers and flowers with this as a base for my hand mixed nutrients. Greenway Biotech is now my vendor for my nutrients. High quality at a reasonable price. You can't beat that.

## Features

- NIGHTSHADE CROP FORMULA 4-18-38 POWDER — Engineered specifically for tomatoes, peppers, eggplants, and potatoes; very high potassium (38%) drives bigger fruit, better flavor, and longer shelf life while low nitrogen (4%) prevents excessive foliage that robs energy from fruit production
- COMPLETE MICRONUTRIENT PACKAGE INCLUDED — Contains Iron, Manganese, Zinc, and Copper in EDTA-chelated form plus Boron and Molybdenum; chelated metals stay plant-available across pH 4-9, helping prevent nutrient lockout in soil and hydroponic systems
- 100% WATER SOLUBLE & CLOG-FREE — Professional-grade powder dissolves completely in room temperature water; ideal for soil drench, foliar spray, drip irrigation, NFT, DWC, and Dutch bucket systems without clogging nozzles or drip lines
- TESTED FOR PURITY, CDFA REGISTERED — Every batch independently tested for heavy metals with results consistently well below required limits; registered with California Department of Food and Agriculture for professional and home grower confidence
- VERSATILE FOR ALL NIGHTSHADES — One formula for your entire nightshade garden: beefsteak, cherry, roma, grape, and heirloom tomatoes, bell and hot peppers, eggplants, potatoes, tomatillos, and ground cherries; Made in USA since 1989

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MZIJ35S |
| Best Sellers Rank | #98,885 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,215 in Garden Fertilizers |
| Brand | Greenway Biotech, Inc. |
| Brand Name | Greenway Biotech, Inc. |
| Coverage | 25 |
| Customer Reviews | 4.6 out of 5 stars 272 Reviews |
| Item Form | Powder |
| Item Weight | 25.2 Pounds |
| Liquid Volume | 1 Liters |
| Manufacturer | Greenway Biotech, Inc. |
| Mixing Ratio | 4:18:38 |
| Specific Uses For Product | Hydroponic,Hydroponics |
| Target Species | Tomatoes |
| UPC | 018227120944 |
| Unit Count | 400.0 Ounce |

## Product Details

- **Brand:** Greenway Biotech, Inc.
- **Item Weight:** 25.2 Pounds
- **Item Form:** Powder
- **Liquid Volume:** 1 Liters
- **Specific Uses For Product:** Hydroponic,Hydroponics

## Images

![Tomato Fertilizer 4-18-38 Powder - Water Soluble with Chelated Micronutrients for Tomatoes Peppers Eggplant - Bigger Fruit Better Flavor - Hydroponics or Soil - 25 LB - Image 1](https://m.media-amazon.com/images/I/81ZlMAD2X8L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does anyone know how much to put in per gallon for a Hydroponic setup?**
A: This is for 5 gallons. I have been using this for tomatoes works great. 12 grams of the fertilizer. 12 grams calcium nitrate. 6 grams Epsom salt . You need gram scales. 28 grams in an ounce so not hardly half an ounce

**Q: I'm growing tomatoes and peppers in 20 gal. containers, what else do I need to go with this fertilizer?**
A: Calcium nitrate and Epsom salt is all that's needed along with this. If in soil no need for pH down but if you using soiless mediums then just pH down your solution about 1/4 teaspoon to 2mls hope this helps. :)

**Q: As side dressing when tomato plant is already producing large tomatoes, how to use? sprinkle on soil or mix in water and pour on soil around root??**
A: Hello,

You can use either way. 
If you would like to use for a liquid application you will need to dissolve 2.5 grams of fertilizer per gallon of water, and then poor onto soil.
Depending on the quality of the soil amounts vary, but one gallon of solution should be enough for about 15 to 20 adult tomato plants.

**Q: Can you put this straight into the reservoir of wicking tubs?**
A: Hello,

You can add it straight to the tubs but we usually recommend dissolving in a bit of water first for easier mixing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product !
*by C***S on February 10, 2018*

Bought this product late December 2017 along with a bag of nitrate and a carton of Epsom Salt. I am growing tomatoes in my little green house here in Orange County, CA. I use Home Depot 5 galleon buckets and fill it with pearlite. So far I am having the best success I have ever had. I am growing winter tomatoes along with Early Girl and am amazed at the amount of tomatoes and the health of the plants. No crunchy brown leaves, I take the companies suggestion to weigh the fertilizer and use,( as per the MPH Gardner formula, which is on Youtube ) 12 grams of the product along with 12 grams of the nitrate and 6 grams of Epsom Salts in 5 galleons of water....which gives you an 19-18-38 NPK. Obviously, I am very pleased and will continue to use the product to grow my veggies.

### ⭐⭐⭐⭐⭐ My favorite so far.
*by A***R on January 13, 2017*

I have used this for the past few months as a base for all plants in my hydroponic garden. It is easy to mix and completely dissolves without using alot of mixing. As a general nutrient, I add calcium nitrate and magnesium sulfate differently for each plant. PPM / EC results are very predictable and accurate as described on the instructions. My mixes vary from EC 0.8 to 4.5 and I can hit the mark every time. PH does not go wild with this, it usually finished between 5.8 and 6.1 using Reverse Osmosis water. I have to do very little if any adjustments to the PH. Many liquid nutrients required heavy adjustments, not this. The resealable bag is rugged and designed to stand up without tipping or ripping. They do have a bulk option which I just purchased 25 lbs of each, tomato and calcium nitrate. It's the best so far. I grow tomatoes, bell peppers, Lettuce, cucumbers and flowers with this as a base for my hand mixed nutrients. Greenway Biotech is now my vendor for my nutrients. High quality at a reasonable price. You can't beat that.

### ⭐⭐⭐⭐⭐ I’m a believer!
*by B***N on June 23, 2023*

This stuff works! I have way more fruit than my neighbors and I barely have to use any product. It’s very concentrated. Look at my tomatoes thriving even without optimal weather conditions!

## Frequently Bought Together

- Greenway Biotech Tomato Fertilizer Powder 4-18-38 Plus Trace Minerals- 100% Water Soluble Includes Essential Chelated Micronutrients- (25 Pounds)
- Greenway Biotech Pepper & Herb Fertilizer 11-11-40 Powder with Micronutrients and Trace Minerals- 100% Water Soluble Fertilizers (25 Pounds Makes 5000 Gallons)
- Greenway Biotech Cucumber Fertilizer 8-16-36-100% Water Soluble Plus Chelated Micronutrients Suitable for Soil, hydroponics, and aeroponics - 2 Pounds (Makes ~400 Gallons)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-05*