Top 9 Magnesium for Plants – Garden Fertilizers

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1. Monterey


4 lb, Monterey LG7220 Epsom Salt for Plants Magnesium Sulfate for Gardening

Monterey #ad - Epsom salts is a source of magnesium that is required by plants to produce chlorophyll in order to carry on photosynthesis. Enhances color of blossoms & leaves - this product enhances the color of blossoms and leaves, promotes new flowers and fruit, improves the root system and improves the length of the stem.

Great for use on gardens. Corrects magnesium deficiency - if a plant is deficient in magnesium, its ability to carry on photosynthesis is decreased. 4-pound. Absorbed through the roots and foliage to help plant produce chlorophyll. It also helps plants absorb phosphorus. Omri, the organic materials review institute, determines whether or not a product qualifies as organic under the USDA's National Organic Program. Organic gardening - our product is omri listed and approved for organic gardening. Promotes blooms in roses and other flowering plants.

Easy to use - monterey epsom salts can be applied using three different methods: directly to the soil at the base of the shrub or tree, mixed with water and used as a soil drench beneath the plants, or mixed with water and used as a foliar spray. Epsom salts. Fast-acting results - magnesium is absorbed through the roots or foliage of the plants to help them produce chlorophyll. It is quite mobile in the plant and is readily translocated in the leaves from the older plant tissue to the new growth.
BrandMonterey #ad
ManufacturerMonterey #ad
Height4 Inches
Length6 Inches
Weight4.2 Pounds
Width6 Inches
Part Number704623

2. PowerGrow Systems


Epsom Salt Magnesium Sulfate Agricultural Grade Bulk 5 Pounds

PowerGrow Systems #ad - Can prevent nutrient deficiencies and increase plant yields. Epsom salt is ph neutral, so it won't affect the pH in your system or soil. Epsom salt magnesium Sulfate can increase seed germination and nutrient uptake. Packed by powergrow systems in visible clear bags - Made in USA. Can make foliage more green and lush.
BrandPowerGrow Systems #ad
ManufacturerPowerGrow Systems #ad

3. Greenway Biotech, Inc.


Magnesium Nitrate and Magnesium Oxide Formula 11-0-0"Greenway Biotech Brand" 100% Water Soluble 2 Pounds

Greenway Biotech, Inc. #ad - This product contains 16% Magnesium Oxide. Excellent for Hydroponics and Soil use. 100% water soluble Nitrate Nitrogen and Magnesium Fertilizer. 2 pounds of greenway biotech magnesium nitrate and Magnesium Oxide Formula 11-0-0 Contains 11% Nitrogen and 9. 6% magnesium. It is derived from Magnesium Nitrate and Magnesium Oxide.
BrandGreenway Biotech, Inc. #ad
ManufacturerGreenway Biotech, Inc. #ad
Part Number4336444133

4. Bloom City


Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, Quart 32 oz

Bloom City #ad - Compatible with any nutrient system: 100% compatible with other nutrient systems, and can help make other minerals more bio-available. Apply with every watering for the full benefit.

We choose only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Contains no harmful edta: unlike other brands, bloom city uses organic chelates and never uses chemicals like EDTA, Healthier for your garden and healtier for the planet. Contains more micronutrients than any other brand: Iron Fe, Molybdenum Mo, Copper Cu, Manganese Mn, Boron B, Zinc Zn, Sulfur S. Bioactivated formula for optimal nutrient uptake: Calcium and magnesium, Micro-chelated with fulvic acid; if you google it you’ll see why that’s good. Prevents common growth deficiencies: Apply Cal-Mag in every stage of growth for strong stalk and leaf health.
BrandBloom City #ad
ManufacturerBloom City #ad
Part Numbercalmag-32

5. Blue Planet Nutrients


CalMag + Iron Liquid Plant Supplement Quart 32 oz Blue Planet Nutrients | Calcium Magnesium Iron for All Plants & Gardens | Prevents & Corrects Blossom End Rot | Vegetables Fruits Flowers Herbs

Blue Planet Nutrients #ad - Calmag with iron supplement is used for plants that require elevated levels of calcium and magnesium to reach their fullest potential and is excellent at preventing and correcting blossom end rot.

This product helps strengthen cell walls resulting in stronger plant structures and greater overall health. Designed for use in all hydroponic systems, all soil-less mediums such as vermiculite, coco-coir, aeroponics, perlite, and in soil. High-grade, concentrated formula. Blue planet nutrients uses only the highest quality ingredients in our hand-crafted nutrient formulas. Proven results across the internet! See why everyone is raving about Blue Planet Nutrients! .
BrandBlue Planet Nutrients #ad
ManufacturerBlue Planet Nutrients #ad
Height7.5 Inches
Length5.25 Inches
Width2.4 Inches
Part Number4336441504

6. General Hydroponics


Soluble, Clean, 1-Quart, Secondary Nutrient Deficiencies Helps Prevent Blossom End Rot & Tip Burn, Concentrated Blend of Calcium & Magnesium, General Hydroponics HGC733525 CALiMAGic 1-0-0

General Hydroponics #ad - Calimagic 1-0-0 is a concentrated blend of readily available calcium and magnesium. Helps prevent blossom end rot and tip burn in tomatoes, lettuce, and other calcium intensive plants. Contains an npK of 1-0-0 Will not clog spray lines or drip emitters and can be used in reservoirs combined with many other fertilizers. Prevents secondary nutrient deficiencies in fast growing plants.
BrandGeneral Hydroponics #ad
ManufacturerGeneral Hydroponics #ad
Height3.2 Inches
Length3.3 Inches
Weight2.75 Pounds
Width8.6 Inches
Part NumberHGC733525

7. Roots Organics


Roots Organics Elemental Supplement 20-Percent Calcium 4-Percent Magnesium Fertilizer, 9-Pound

Roots Organics #ad - Results in more Vigorous Plants And Larger Yields. Macronutrient And Micronutrient Supplement. Specifically created to augment calcium And Magnesium Levels And Prevent Deficiencies That Can Occur With Fast-Growing Plants. No assembly Required.
BrandRoots Organics #ad
ManufacturerSunlight Supply Inc. #ad
Height1.8 Inches
Length15 Inches
Weight9.15 Pounds
Width10 Inches
Part NumberROEL9

8. HydroHort


Cal-N-Mag Plant Supplement by HydroHort | Our Cal-N-Mag Supplement is a Calcium Fertilizer and Magnesium Fertilier | Stop Blossom End Rot with Cal Mag for Plants | 1 QT

HydroHort #ad - Our cal mag supplement is The Nutrient for Plants. It is the tomato secret fertilizer. Prevents common growth deficiencies: Apply Cal-Mag at every stage of growth for strong plants. Hydrohort's cal-n-mag Plus is the preferred Nutrients for Tomato Plants. Hydrohort's cal-n-mag supplement 2-0-0 is an Excellent Source of Calcium and Magnesiumfor Plants. Excellent source for Plant Calcium used against Rot Stop for Tomatoes.
BrandHydroHort #ad
ManufacturerHydroHort #ad
Height8 Inches
Length5 Inches
Width2 Inches



Magnesium and Iron Liquid Plant Food for Hydroponics & Soil, ENVY CalMag+ Fe Quart 4-0-0 Blended with no Calcium Chloride | Professional Grade Calcium

ENVY #ad - Prevents blossom end rot - our calmag+ fe provides tomatoes, Peppers and other hydroponically grown crops an ample concentration of highly-absorbable Calcium, preventing Calcium Deficiency which causes leaf yellowing & blossom end rot in Tomatoes and Peppers.

Our concentrated CalMag+ replenishes nutrients lost to lock-up. While R. O. Water offers consumers unparalleled purity, it strips minerals necessary for plant growth - ENVY's CalMag+ Fe replenishes water stripped of minerals. Superior cal-mag - envy's calmag+ is derived from a superior source of Ca, Calcium Nitrate. While it performs well, essential nutrients become locked up in its fibers. Most calmag blends you will find are created by blending Calcium Chloride, which is less friendly for plants and hydro systems.

Formulated to replace minerals depleted by reverse osmosis water applications. Corrects coir nutrient lock up - coco-coir is a popular growing media for hobbyist and professional gardeners alike. Better together - our calmag+ fe performs excellently with all hydroponic, soil and coir nutrient lines as a supplementary Calcium, Magnesium and Iron source - however; it performs best when combined with ENVY's A & B base nutrients and Bloom Trigger concentrate. Perfect for r. O.
BrandENVY #ad
ManufacturerNational Liquid Fertilizer #ad