---
product_id: 168588646
title: "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 - 1 LB"
brand: "greenway biotech, inc."
price: "222.78 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Greenway Biotech, Inc."
url: https://www.desertcart.tn/products/168588646-greenway-biotech-inc-tomato-fertilizer-4-18-38-powder-water
store_origin: TN
region: Tunisia
---

# 4-18-38 NPK optimized for nightshades 100% water soluble, clog-free formula Chelated micronutrients for max uptake 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 - 1 LB

**Brand:** greenway biotech, inc.
**Price:** 222.78 DT
**Availability:** ✅ In Stock

## Summary

> 🍅 Grow Bigger, Tastier Tomatoes Like a Pro — Don’t Miss the Flavor Revolution!

## Quick Answers

- **What is this?** 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 - 1 LB by greenway biotech, inc.
- **How much does it cost?** 222.78 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/168588646-greenway-biotech-inc-tomato-fertilizer-4-18-38-powder-water)

## 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

- • **Trusted Purity & Safety:** Independently tested, CDFA registered, made in the USA since 1989 for consistent, safe performance.
- • **Micronutrient Powerhouse:** EDTA-chelated Iron, Manganese, Zinc, Copper plus Boron & Molybdenum ensure nutrient absorption across pH 4–9.
- • **Seamless Hydro & Soil Use:** Fully dissolves for drip, foliar, NFT, DWC, and soil applications without clogging irrigation systems.
- • **Precision NPK for Peak Yield:** High potassium (38%) boosts fruit size & flavor while low nitrogen (4%) prevents excess foliage.
- • **Versatile & Flexible Feeding:** Adjustable rates for soil or hydroponics, compatible with all growing media for year-round harvest optimization.

## Overview

Greenway Biotech’s Tomato Fertilizer 4-18-38 is a premium, water-soluble powder designed specifically for nightshade crops like tomatoes, peppers, and eggplants. Featuring a high-potassium formula with chelated micronutrients, it enhances fruit size, flavor, and shelf life while supporting strong root and bloom development. Perfect for hydroponic and soil systems, it dissolves completely to prevent clogging and is rigorously tested for purity and safety. Trusted by gardeners since 1989, this fertilizer delivers consistent, high-yield results across diverse growing media.

## 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 - 1 LB : Patio, Lawn & Garden

Review: Great Tomato Fertilizer for Bigger, Healthier Harvests! - I’ve been using this fertilizer on my tomatoes, peppers, and eggplants, and I’ve noticed a big improvement in both plant growth and fruit production. The plants have stronger stems, darker green leaves, and they’re producing more blossoms than before. My tomatoes are growing larger, ripening evenly, and have a richer, sweeter flavor. It mixes easily with water, and a little goes a long way, making the 5-pound bag a great value. I’m very happy with the results and will definitely keep using it throughout the growing season. Highly recommended for anyone looking to boost their garden harvest!
Review: Excellent arrival and fertilizer - Received in a timely manner and product works great

## Features

- OPTIMIZED NIGHTSHADE FORMULA (4-18-38): Designed for tomatoes, peppers, eggplants, and potatoes—high potassium (38%) boosts fruit size, flavor, and shelf life while low nitrogen (4%) limits excess foliage.
- COMPLETE MICRONUTRIENT SUPPORT: Includes Iron, Manganese, Zinc, Copper (EDTA-chelated), plus Boron and Molybdenum for better nutrient uptake across pH 4–9 and reduced lockout.
- 100% WATER SOLUBLE & CLOG-FREE: Fully dissolves in water for smooth use in hydroponics, drip systems, foliar sprays, NFT, DWC, and Dutch buckets without clogging.
- TESTED FOR PURITY & SAFETY: Independently tested for heavy metals and CDFA registered, ensuring reliable, safe, and high-quality performance.
- ALL-IN-ONE FOR NIGHTSHADE CROPS: Suitable for all varieties—tomatoes, peppers, eggplants, potatoes, tomatillos, and more; trusted formula made in the USA since 1989.
- FLEXIBLE APPLICATION RATES: Soil & containers: 1–2 tsp per gallon every 1–2 weeks. Hydroponics: 0.5–0.75 lbs per 100 gallons. Compatible with all irrigation methods including drip and foliar spray.
- HIGH PHOSPHORUS FOR STRONG ROOT & BLOOM SET: 18% phosphorus supports vigorous root development and abundant flower set—critical for high-yield harvests from tomatoes, eggplants, and peppers.
- WORKS IN ALL GROWING MEDIA: Performs in soil, coco coir, perlite, rockwool, and DWC—adjust EC and pH after mixing for best results in hydroponic reservoirs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081ZF2H1B |
| Application Method | drip,foliar spray,soil drench |
| Best Sellers Rank | #142,013 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,373 in Garden Fertilizers |
| Brand | Greenway Biotech, Inc. |
| Brand Name | Greenway Biotech, Inc. |
| Coverage | vegetable gardens |
| Customer Reviews | 4.6 out of 5 stars 281 Reviews |
| Item Form | Liquid, Powder |
| Item Weight | 16 ounces |
| Liquid Volume | 1 quarts |
| Manufacturer | Greenway Biotech, Inc. |
| Mixing Ratio | 1/2 teaspoon per gallon of water or 3 grams per plant |
| Model Number | TB4-18-38 |
| Number of Packs | 1 |
| Part Number | Tomato_Parent |
| Specific Uses For Product | Hydroponic,Hydroponics |
| Target Species | tomatoes |
| UPC | 619206360483 |
| Unit Count | 16 Ounce |

## Product Details

- **Brand:** Greenway Biotech, Inc.
- **Item Form:** Liquid, Powder
- **Item Weight:** 16 ounces
- **Liquid Volume:** 1 quarts
- **Specific Uses For Product:** Hydroponic,Hydroponics

## Images

![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 - 1 LB - Image 1](https://m.media-amazon.com/images/I/61WrUbJpMvL.jpg)
![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 - 1 LB - Image 2](https://m.media-amazon.com/images/I/71lthjEhGwL.jpg)
![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 - 1 LB - Image 3](https://m.media-amazon.com/images/I/618ooIcitaL.jpg)
![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 - 1 LB - Image 4](https://m.media-amazon.com/images/I/61Y4QcCzn3L.jpg)
![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 - 1 LB - Image 5](https://m.media-amazon.com/images/I/61Elva7bNYL.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 Tomato Fertilizer for Bigger, Healthier Harvests!
*by S***A on July 12, 2026*

I’ve been using this fertilizer on my tomatoes, peppers, and eggplants, and I’ve noticed a big improvement in both plant growth and fruit production. The plants have stronger stems, darker green leaves, and they’re producing more blossoms than before. My tomatoes are growing larger, ripening evenly, and have a richer, sweeter flavor. It mixes easily with water, and a little goes a long way, making the 5-pound bag a great value. I’m very happy with the results and will definitely keep using it throughout the growing season. Highly recommended for anyone looking to boost their garden harvest!

### ⭐⭐⭐⭐⭐ Excellent arrival and fertilizer
*by R***D on July 27, 2026*

Received in a timely manner and product works great

### ⭐⭐⭐⭐⭐ Be careful - highly concentrated, very powerful.
*by C***. on June 9, 2026*

This is an incredibly strong fertilizer. I fried 3 of my 13 plants with this at Dow of blue .75 - 1.5 tbl spoons per plant in. 3’ deep planter box of compost and organic potting s that I’ve been using for 2 years. I dig down about 3” beside the plant and add the feet. I should have used a teaspoon. Fried my tomatoes and it’s companion herb fert fried my basil and oregano. The rosemary, tyhyme, sage and parsley along with the greens thrived.

## Frequently Bought Together

- Greenway Biotech Tomato Fertilizer Powder 4-18-38 Plus Trace Minerals- 100% Water Soluble Includes Essential Chelated Micronutrients- (1 Pound)
- Greenway Biotech Pepper & Herb Fertilizer 11-11-40 Powder with Micronutrients and Trace Minerals- 100% Water Soluble Fertilizers (1 Pound Makes 200 Gallons)
- Greenway Biotech Cucumber Fertilizer 8-16-36-100% Water Soluble Plus Chelated Micronutrients Suitable for Soil, hydroponics, and aeroponics - 1 Pound (Makes ~200 Gallons)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-01*