---
product_id: 358864916
title: "Botanicare 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: "฿12379"
currency: THB
in_stock: true
reviews_count: 5
category: "Botanicare"
url: https://www.desertcart.co.th/products/358864916-botanicare-cal-mag-plus-a-calcium-magnesium-and-iron-plant
store_origin: TH
region: Thailand
---

# Calcium, Magnesium & Iron boost Foliar spray & watering use 2-0-0 NPK formula Botanicare 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:** ฿12379
**Availability:** ✅ In Stock

## Summary

> 🌱 Elevate your garden game—because your plants deserve premium care!

## Quick Answers

- **What is this?** Botanicare 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?** ฿12379 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/358864916-botanicare-cal-mag-plus-a-calcium-magnesium-and-iron-plant)

## 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

- • **Trusted by Experts:** Highly rated with 4.7 stars from over 2,500 growers who demand top-tier plant health.
- • **Deficiency Defender:** Corrects calcium, magnesium, and iron deficiencies for healthier, stronger plants.
- • **Dual Application Power:** Use as a foliar spray or mix with every watering for maximum nutrient absorption.
- • **Versatile Growth Support:** Perfect for soil, coco coir, containers, and hydro gardens—grow anywhere with confidence.
- • **Precision Nutrient Formula:** Balanced 2-0-0 NPK to complement your existing feeding regimen without overloading.

## Overview

Botanicare Cal-Mag Plus is a premium 1-gallon plant supplement packed with calcium, magnesium, and iron to correct common nutrient deficiencies. Featuring a precise 2-0-0 NPK formula, it supports robust growth whether applied as a foliar spray or mixed into watering routines. Ideal for soil, coco coir, containers, and hydroponic systems, this trusted formula has earned a 4.7-star rating from over 2,500 satisfied customers.

## 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.

Review: Tomatoes need calcium. Mine just started to show that tell tale sign of deficiency and they straighten right up and had a wonderful year. Gave them a few doses and backed off. Then a few more about 12-14 days later. Caught it early. Very grateful for this helpful product. Easy to mix , strength was excellent. . And a decent value for the return .
Review: Works well, I tried cheaper brands like cal magic and they got sick, Cal- Mag is the top of the line.

## Features

- 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 |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,503) |
| Date First Available | 8 August 2012 |
| Ingredients | Sulfates and nitrates of calcium, magnesium. |
| Item display height | 10.75 inches |
| Item display length | 6.3 inches |
| Item display weight | 10.55 Pounds |
| Item display width | 5.1 inches |
| Item model number | BCCMGAL |
| Item volume | 1 Gallons |
| Manufacturer | Hawthorne Hydroponics, LLC |
| Moisture needs | moderate-watering |
| Part number | 732115 |
| Product Dimensions | 12.95 x 16 x 26.67 cm; 4.67 kg |
| Sunlight exposure | partial-shade |

## Product Details

- **Brand:** Botanicare
- **Item form:** Liquid
- **Item weight:** 10.3 Pounds
- **Liquid volume:** 3.78 Liters
- **Specific uses for product:** Plant Growth

## Images

![Botanicare 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/512H7Q9uHML.jpg)
![Botanicare 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/512SZsS7LaL.jpg)
![Botanicare 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/51PRXS2aKCL.jpg)
![Botanicare 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)
![Botanicare 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/61F1mb-LXOL.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

### ⭐⭐⭐⭐⭐ Review
*by S***R on 30 September 2025*

Tomatoes need calcium. Mine just started to show that tell tale sign of deficiency and they straighten right up and had a wonderful year. Gave them a few doses and backed off. Then a few more about 12-14 days later. Caught it early. Very grateful for this helpful product. Easy to mix , strength was excellent. . And a decent value for the return .

### ⭐⭐⭐⭐⭐ Review
*by B***D on 27 October 2025*

Works well, I tried cheaper brands like cal magic and they got sick, Cal- Mag is the top of the line.

### ⭐⭐⭐⭐⭐ Review
*by C***S on 12 August 2025*

Buy big to save money

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-06*