---
product_id: 41670208
title: "4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds)"
brand: "masterblend"
price: "€ 447.35"
currency: EUR
in_stock: true
reviews_count: 8
category: "Master Blend"
url: https://www.desertcart.com.cy/products/41670208-4-18-38-tomato-and-vegetable-fertilizer-bulk-1-5
store_origin: CY
region: Cyprus
---

# 4-18-38 NPK ratio for optimal growth 100% water soluble for easy mixing Available in bulk 1, 5, or 25 lbs for scalability 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds)

**Brand:** masterblend
**Price:** € 447.35
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow like a pro, harvest like a boss!

## Quick Answers

- **What is this?** 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds) by masterblend
- **How much does it cost?** € 447.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/41670208-4-18-38-tomato-and-vegetable-fertilizer-bulk-1-5)

## Best For

- masterblend enthusiasts

## Why This Product

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

## Key Features

- • **Precision NPK Formula:** Tailored 4-18-38 ratio fuels robust tomato & vegetable growth
- • **Pro-Recommended Base Mix:** Trusted by growers as the foundation for high-yield, premium produce
- • **Trace Mineral Enrichment:** Includes all essential trace minerals for balanced, nutrient-rich feeding
- • **Hydroponic-Ready Solubility:** Completely water soluble for seamless integration in hydroponic systems
- • **Bulk Options for Every Scale:** Choose from 1, 5, or 25-pound bags to match your garden size and ambition

## Overview

MasterBlend 4-18-38 Tomato & Vegetable Fertilizer is a premium, water-soluble powder designed for hydroponic and soil-based growing. Its precise nutrient ratio and complete trace mineral profile support vigorous growth and superior fruit quality. Available in bulk sizes, it’s the go-to base fertilizer for serious gardeners aiming for maximum yield and sustainability.

## Description

MasterBlend fertilizers 4-18-38 Tomato and Vegetable Fertilizer. Because of the unique composition, it is recommended to use the 4-18-38 together with Magnesium Sulfate (Epsom Salt) and Calcium Nitrate for a balanced water soluble fertilizer. It is recommended to use MasterBlend 4-18-38 in conjunction with Calcium Nitrate and Magnesium Sulfate (also available) in the following recipes. Gallon Recipe: 2.4 grams MasterBlend 4-18-38 2.4 grams Calcium Nitrate (15.5-0-0) 1.2 grams Magnesium Sulfate (Epsom Salt) 5 Gallon Recipe: 12 grams MasterBlend 4-18-38 12 grams Calcium Nitrate (15.5-0-0) 6 grams Magnesium Sulfate (Epsom Salt). This listing includes a bulk 25# Bag of Masterblend 4-18-38 fertilizer only.

Review: Well balanced and good amount of micro nutrients. - The best hydroponics fertilizer we have used. It is well balanced and has the correct amount of micro nutrients. We have to make adjustments for other brands but not with Masterblend.
Review: Excelente nutriente. - Verduras y vegetales enormes

## Features

- MasterBlend 4-18-38 Fertilizer in Bulk
- Choose 1, 5, or 25 Pound Quantities
- MasterBlend World renowned Hydroponic Vegetable Fertilizer for Peppers and Tomatoes!
- Super concentrated and easy to use!
- MasterBlend is 100% water soluble, and contains all the trace minerals needed!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0722JW1SZ |
| Best Sellers Rank | #130,440 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,363 in Garden Fertilizers |
| Brand | MasterBlend |
| Brand Name | MasterBlend |
| Coverage | Medium |
| Customer Reviews | 4.8 out of 5 stars 139 Reviews |
| Item Form | Powder |
| Item Weight | 11.34 kg |
| Liquid Volume | 400 fluid ounces |
| Manufacturer | MasterBlend |
| Mixing Ratio | 2:2:1 |
| Model Number | MASTERBLEND 4-18-38 (25 POUNDS) |
| Number of Packs | 1 |
| Part Number | MASTERBLEND 4-18-38 (25 POUNDS) |
| Specific Uses For Product | Hydroponic |
| Target Species | Vegetables |
| Unit Count | 400 Fluid Ounces |

## Product Details

- **Brand:** MasterBlend
- **Item Form:** Powder
- **Item Weight:** 25 Pounds
- **Liquid Volume:** 400 Fluid Ounces
- **Specific Uses For Product:** Hydroponic

## Images

![4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds) - Image 1](https://m.media-amazon.com/images/I/71qG3EmNicL.jpg)

## Questions & Answers

**Q: Anybody use this for rdwc or dwc**
A: I've been using this with all my hydroponics, Kratky Method, Aeroponics, DWC, etc.
Won't use anything else. Great results!

**Q: Is this organic? Thanks.**
A: N-P-K and trace elements are all inert chemical elements. Plants ingest these chemicals using the bacterial and fungi in the soil. Your soil may have other organic material; some of which freaks down into N-P-K and trace elements in varying degrees depending on the material which has been composted.   Elements are inert.  Nitrogen is Nitrogen is Nitrogen.  They are not organic. You have to look at the data sheets and figure how much fertilizer you are adding to you plants to keep them fed.   You can call Masterblend and talk to their staff who can advise you on dosage.  I normally use 12 Grams of 4-18-15 in 5 gallons of water along with 6 0z of Epson Salt (adds Magnesium which helps absorb trace elements plants also need)  and 12 grams of 10-58-17. I occasionally use 12  Grams of 15-0-0 Calcium Nitrate for Blossom End Rot in tomatoes along with my 4-18-38 12 grams each in 5 gallons of water. NOTE This is very heavy feeding in a Hydroponic Dutch Bucket Tomato system. You need to come up with a dosage that works for you and should check on recommended mixtures any your garden or hydroponic setup.

**Q: How often should I apply to the garden**
A: Can you use this product in regular soul in your vegetable garden

**Q: Is there CL (clorine) is this as a trace element?**
A: It's not listed on the bag.  I've had great luck with this I grow hydroponic tomatoes, lettuce, swiss chard, squash, and even hydroponic corn in dutch buckets (which is doing pretty well so far but this is an experiment).   I forget if it says in the description, but I mix equal parts of this and calcium nitrate with 1/2 as much epsom salts.  for 5 gallons of water that is 12 grams each of masterblend and calcium nitrate, and 6 grams of epsom salts.  Food grows like crazy and tastes great.  I have tomatoes in soil that are not growing as well as the dutch bucket tomatoes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well balanced and good amount of micro nutrients.
*by A***N on May 31, 2026*

The best hydroponics fertilizer we have used. It is well balanced and has the correct amount of micro nutrients. We have to make adjustments for other brands but not with Masterblend.

### ⭐⭐⭐⭐⭐ Excelente nutriente.
*by A***R on August 15, 2026*

Verduras y vegetales enormes

### ⭐⭐⭐⭐⭐ Grows gorgeous vegetables
*by D***E on August 28, 2024*

We ran out and our plants definitely went downhill. We use this as the base and add other nutrients as appropriate. An excellent base for higher fruit/vegetable production and quality as you're transitioning to a fully sustainable system.

## Frequently Bought Together

- MasterBlend 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (25 Pounds)
- Magnesium Sulfate 100% Water Soluble (20 Pounds)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-09-05*