---
product_id: 81978809
title: "Calcium Nitrate - 5 Pound Bag"
brand: "southern ag"
price: "£30.19"
currency: GBP
in_stock: true
reviews_count: 9
category: "Southern Ag"
url: https://www.desertcart.co.uk/products/81978809-calcium-nitrate-5-pound-bag
store_origin: GB
region: United Kingdom
---

# 15.5% Nitrogen Water Soluble 19% Calcium Calcium Nitrate - 5 Pound Bag

**Brand:** southern ag
**Price:** £30.19
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow Big or Go Home!

## Quick Answers

- **What is this?** Calcium Nitrate - 5 Pound Bag by southern ag
- **How much does it cost?** £30.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/81978809-calcium-nitrate-5-pound-bag)

## Best For

- southern ag enthusiasts

## Why This Product

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

## Key Features

- • **Boost Your Greens:** Elevate your plant growth with a powerful blend of nitrogen and calcium.
- • **5-Pound Power Pack:** Compact yet mighty, this 5-pound bag is perfect for any gardening enthusiast.
- • **Water-Soluble Wonder:** Easily mixable formula ensures quick absorption for thriving plants.
- • **Perfect for All Plants:** Versatile use for most vegetables and flowers, making it a garden essential.
- • **Calcium Deficiency No More:** Say goodbye to calcium deficiency and hello to robust vegetables and flowers.

## Overview

Southern Ag Calcium Nitrate is a premium plant growth enhancer, containing 15.5% nitrogen and 19% calcium in a readily water-soluble powder form. Ideal for preventing calcium deficiency in a variety of vegetables and flowers, this 5-pound bag is a must-have for any serious gardener looking to boost their plant health.

## Description

CONTAINS: 15.5% Nitrogen, 19% Calcium - readily water soluble. USE ON: Most vegetables and flowers. FOR: Supplying nitrogen and calcium to growing crops. Particularly useful as side dressing. RATE: One cup per 50 feet of row or one tsp. per plant APPLICATION: Apply over root zone but not too close to stem.

Review: Southern AG has good chemicals. - The fertilizer and chemicals from Southern AG are effective and easy to use. I've used them before to eradicate slugs. I use the calcium nitrate to speed up straw, leaf, and grass compost. The bag arrived torn and spilled everywhere, the desertcart box was damaged and had granules falling out. I suggest using a stronger plastic bag that'll survive shipping. The item was returned without issue. I'm leaving a 5 star review since it's not their fault and want people to know that they're reliable but to be cautious when opening the box.
Review: the product just works! - great product---have used for years

## Features

- CONTAINS: 15.5% Nitrogen, 19% Calcium - readily water soluble
- Excellent source of Calcium and nitrogen
- Prevents Calcium deficiency

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0013LQJKU |
| Best Sellers Rank | #11,249 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #422 in Garden Fertilizers |
| Brand | Southern Ag |
| Brand Name | Southern Ag |
| Coverage | nitrogen and calcium |
| Customer Reviews | 4.6 out of 5 stars 1,488 Reviews |
| Global Trade Identification Number | 00051538014052 |
| Included Components | 1 bag |
| Item Form | Powder |
| Item Weight | 5 Pounds |
| Liquid Volume | 5 Liters |
| Manufacturer | Southern Ag |
| Mixing Ratio | 1:0:0 |
| Model Number | 01405 |
| Number of Items | 80 |
| Part Number | 01405 |
| Specific Uses For Product | Plant Growth |
| Target Species | most vegetables and flowers |
| UPC | 051538014052 |
| Unit Count | 80.0 Ounce |

## Product Details

- **Brand:** Southern Ag
- **Item Form:** Powder
- **Item Weight:** 5 Pounds
- **Liquid Volume:** 5 Liters
- **Specific Uses For Product:** Plant Growth

## Images

![Calcium Nitrate - 5 Pound Bag - Image 1](https://m.media-amazon.com/images/I/9158JXwuexL.jpg)

## Questions & Answers

**Q: Can I use this on pepper, bell pepper, pomegranate, citrus and lime plants other than tomatoes?**
A: I used this in the water reservoir on my Earthboxes.I grew tomatoes and peppers and it worked excellent. It curtailed the BER and seemed to make the plant stronger.

**Q: Would this take care of blossom rot for watermelons?**
A: Blossom-end rot is a nonparasitic disease of tomato, pepper and watermelon. Losses can vary from a trace to more than 50 percent. The first symptom is a slight water-soaked area on or near the blossom end of the fruit. So using Calcium Nitrate should help with your blossom end rot problems.

**Q: Is this for use in addition to a plant food or alone?  If I use this and a seperate plant food will my tomatoes get too much Nitrogen?**
A: Well, if you have the master blend combo (Master Blend, CaNO3 + (NH2)NO3 & Magnesium sulfate), then you've got everything that you need. If you’re just amending with Nitrogen because your leaves are turning yellow from bottom upwards and that should be the only reason you feed such hgh amounts of N to anything but lawn grass. Ideally you want a 7-7-14 or you can put something together for yourself. Find the GCF between 3 fertilizers and you handle it like algebra to figure out the NPK for all 3, mixed.

**Q: Is this pure calcium nitrate?**
A: No, it is not "pure."

## Customer Reviews

### ⭐⭐⭐⭐⭐ Southern AG has good chemicals.
*by M***D on May 5, 2026*

The fertilizer and chemicals from Southern AG are effective and easy to use. I've used them before to eradicate slugs. I use the calcium nitrate to speed up straw, leaf, and grass compost. The bag arrived torn and spilled everywhere, the Amazon box was damaged and had granules falling out. I suggest using a stronger plastic bag that'll survive shipping. The item was returned without issue. I'm leaving a 5 star review since it's not their fault and want people to know that they're reliable but to be cautious when opening the box.

### ⭐⭐⭐⭐⭐ the product just works!
*by G***N on May 4, 2026*

great product---have used for years

### ⭐⭐⭐⭐⭐ Great Fertilizer for Tomatoes and many Flowering plants such as Hydrangeas
*by A***R on April 6, 2026*

This is a Excellent fertilizer for many Garden plants and Exspecially for Hydrangea

## Frequently Bought Together

- Southern Ag Calcium Nitrate - 5 Pound Bag
- MasterBlend 4-18-38 Tomato & Vegetable Fertilizer - Bulk 1, 5 or 25 Pounds (5 Pounds)

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**Shop now:** [https://www.desertcart.co.uk/products/81978809-calcium-nitrate-5-pound-bag](https://www.desertcart.co.uk/products/81978809-calcium-nitrate-5-pound-bag)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-15*