---
product_id: 150273266
title: "Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon"
brand: "botanicare"
price: "€ 318.95"
currency: EUR
in_stock: true
reviews_count: 5
category: "Botanicare"
url: https://www.desertcart.hr/products/150273266-cal-mag-plus-a-calcium-magnesium-and-iron-plant-supplement
store_origin: HR
region: Croatia
---

# Calcium, Magnesium & Iron boost Mixes easily with water or spray 2-0-0 NPK formula Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon

**Brand:** botanicare
**Price:** € 318.95
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock your plants’ full potential with every drop!

## Quick Answers

- **What is this?** Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon by botanicare
- **How much does it cost?** € 318.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/150273266-cal-mag-plus-a-calcium-magnesium-and-iron-plant-supplement)

## Best For

- botanicare enthusiasts

## Why This Product

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

## Key Features

- • **Growth Maximizer:** Supports root, seed, and overall plant development with a fortified mineral blend.
- • **Deficiency Defender:** Corrects calcium, magnesium, and iron shortages for vibrant, healthy plants.
- • **Dual Delivery Power:** Apply as a foliar spray or mix with every watering for maximum nutrient uptake.
- • **Trusted Crop Savior:** Highly rated by growers for rescuing and boosting yields even in challenging conditions.
- • **Versatile Application:** Use in soil, coco coir, containers, or hydro gardens—flexible for any grow setup.

## Overview

Botanicare Cal-Mag Plus is a premium liquid supplement delivering essential calcium, magnesium, and iron with a 2-0-0 NPK ratio. Designed to correct common nutrient deficiencies, it enhances plant growth and resilience whether used in soil, coco coir, or hydroponic systems. Easy to mix or spray, it’s a must-have for professional and hobbyist growers aiming for lush, healthy crops and maximum yields.

## Description

Product Description Supplement your existing nutrient programs in reverse osmosis water, or when growing in soil or coco coir-based media, to compensate for a natural calcium draw with Botanicare Cal-Mag Plus. Formulated to correct common deficiencies, Botanicare Cal-Mag Plus is a highly fortified calcium, magnesium, and iron plant supplement. It contains a 2-0-0 NPK and can be mixed in with regular waterings or applied as a foliar spray to further enhance growth. Ingredients Sulfates and nitrates of calcium, magnesium. Directions Mix well and use with every watering, as needed, for enhanced growth apply as a foliar spray. For use in containers, coco, hydrogardens, and when growing in soil. Safety Warning Keep out of reach of children and pets. Avoid contact with skin and eyes. In case of accidental contact, rinse immediately with plenty of water. Do not ingest. Store in a cool, dry place away from heat and open flames. Do not use near food or feed areas. Always wear appropriate protective clothing and gloves when handling. Do not apply in windy conditions to avoid drift and potential harm to nearby plants or animals. Dispose of container and contents in accordance with local, state, and federal regulations.

Review: Happy Peppers - I've been using Cal-Mag Plus for about 5 years now for my peppers. The peppers love the extra nutrients that are hard to find in other fertilizers. Very effective for pepper production and helps prevent blossom end rot. Pair this with your favorite fertilizer and you'll have happy plants.
Review: Works great - Wonderful product cured multiple situation in my garden I didn’t even know lack of calcium and magnesium was the cause

## Features

- Causes serious eye damage.
- Highly fortified calcium, magnesium, and iron plant supplement formulated to correct common deficiencies
- Supplement your existing nutrient program with Cal-Mag Plus
- To Use: Mix well and use with every watering, as needed, for enhanced growth apply as a foliar spray
- For use in containers, coco, hydrogardens, and when growing in soil
- Contains formulation of 2-0-0 NPK

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000J2CUPW |
| Best Sellers Rank | 417,536 in Garden ( See Top 100 in Garden ) 1,602 in Hydroponic Nutrients & Additives |
| Brand | Botanicare |
| Brand Name | Botanicare |
| Coverage | Full |
| Customer Reviews | 4.8 out of 5 stars 2,601 Reviews |
| Global Trade Identification Number | 00757900241285 |
| Included Components | Bottle with liquid supplement |
| Item Form | Liquid |
| Item Type Name | Calcium Magnesium & Iron Plant Supplement |
| Item Weight | 4.67 kg |
| Item form | Liquid |
| Item weight | 4.67 kg |
| Liquid Volume | 3.78 Litres |
| Liquid volume | 3.78 Litres |
| Manufacturer | Hawthorne Hydroponics, LLC |
| Mixing Ratio | 5 ml/L |
| Model Number | BCCMGAL |
| Number of Items | 1 |
| Part Number | 732115 |
| Specific Uses For Product | Plant Growth, Root Development, Seed Development, Soil Conditioning |
| Specific uses for product | Plant Growth, Root Development, Seed Development, Soil Conditioning |
| Target Species | plants |
| UPC | 714639490223 791090262002 783942912234 757900241285 765018456736 309277145590 702872551191 |
| Unit Count | 3780.0 millilitre |

## Product Details

- **Brand:** Botanicare
- **Item form:** Liquid
- **Item weight:** 4.67 kg
- **Liquid volume:** 3.78 Litres
- **Specific uses for product:** Plant Growth, Root Development, Seed Development, Soil Conditioning

## Images

![Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon - Image 1](https://m.media-amazon.com/images/I/61Mb3u-UExL.jpg)
![Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon - Image 2](https://m.media-amazon.com/images/I/61F1mb-LXOL.jpg)
![Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon - Image 3](https://m.media-amazon.com/images/I/61O7MzBNS+L.jpg)
![Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon - Image 4](https://m.media-amazon.com/images/I/61EOEraMaIL.jpg)
![Cal-Mag Plus, A Calcium, Magnesium, and Iron Plant Supplement, Corrects Common Plant Deficiencies, Add to Water or Use as a Spray, 2-0-0 NPK, 1-Gallon - Image 5](https://m.media-amazon.com/images/I/71EtwjeHHmL.jpg)

## Questions & Answers

**Q: How much will this make?**
A: Mixed at 3ml per gallon it will make 320 gallons.
Mixed at 5ml per gallon it will make 192 gallons.

**Q: Is this carbonate based?**
A: Near neutral pH, ferric ions form insoluble solids and are thus not bioavailable. EDTA (and other chelating agents) address this problem, by forming soluble complexes that resist formation of hydroxides. EDTA increases the bioavailability and plant uptake of the metals in the soil

**Q: How long can this be kept and or stored**
A: Product warranty on nutrients and supplements is 1 year past the date of manufacture. Stable shelf life can run past this substantially if unopened, but this time greatly depends on storage conditions. Once a product is opened, it should be used within 6 months, or ideally- the time it takes to cycle a production garden which is typically 12 weeks on average. Opened products may last longer than this, but it should not be expected to be the case.

**Q: Can this be used for Tomatoes, Blossom end rot?**
A: Yes, this works well with Tomatoes.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Happy Peppers
*by E***T on 6 April 2026*

I've been using Cal-Mag Plus for about 5 years now for my peppers. The peppers love the extra nutrients that are hard to find in other fertilizers. Very effective for pepper production and helps prevent blossom end rot. Pair this with your favorite fertilizer and you'll have happy plants.

### ⭐⭐⭐⭐⭐ Works great
*by R***B on 1 June 2026*

Wonderful product cured multiple situation in my garden I didn’t even know lack of calcium and magnesium was the cause

### ⭐⭐⭐⭐⭐ Super great product!
*by P***E on 5 April 2026*

I buy this every year. I don't have tomatoes if I don't have this product.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-08*