Top 10 Magnesium Fertilizer for Plants – Home & Kitchen Features

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1. Bloom City


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

Bloom City #ad - Compatible with any nutrient system: 100% compatible with other nutrient systems, and can help make other minerals more bio-available. Contains more micronutrients than any other brand: Iron Fe, Molybdenum Mo, Zinc Zn, Boron B, Copper Cu, Manganese Mn, Sulfur S.

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. 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. We choose only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Apply with every watering for the full benefit.
BrandBloom City #ad
ManufacturerBloom City #ad
Part Numbercalmag-32

2. Technaflora


Vegetables, Gardens, Trees, 4 Liters, Technaflora TFMC4L Magnesium Calcium Blend Liquid MagiCal Fertilizer for Flowers, Lawns

Technaflora #ad - Accelerates protein syntheses, Maintains high starch content in crops. Improves the nutritional quality of plants. Creates lush and greener foliage and Maintains a healthy root system. Contains magnesium, Iron and calcium to have healthier plant growth. Improves the density of fruit and the production of essential oils.
BrandTechnaflora #ad
ManufacturerTechnaflora #ad
Height11.3 Inches
Length6 Inches
Weight10.45 Pounds
Width6 Inches
Part Number716455

3. PowerGrow Systems


Epsom Salt Magnesium Sulfate Agricultural Grade Bulk 5 Pounds

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



Water Soluble Epsom Salts | Fertilizer for Roses, Vegetables and Trees 1.5 lbs, Shrubs, Flowers, ENVY Magnesium Sulfate Plant Food

ENVY #ad - Agricultural grade - our magnesium sulfate is formulated to be pure for use with both indoor & outdoor plants, gardens and trees - we do not include any additional ingredients found in many Epsom Salts products used for bathing.

No nutrient burn - our magnesium sulfate is kind to all plants, trees and flowers. 100% water soluble - we use only top-quality ingredients that allow for maximum solubility in warm or cold water, for optimal dilution ratios. Roses, its use for roses, peppers & tomatoes - while epsom salts provide an excellent source of supplementary magnesium and sulfur for lush, green foliage in all plants and flowers, Peppers and Tomatoes is particularly effective.

Resealable pouch w measuring scoop - we know storing plant foods in the box can get messy, so all of ENVY's water-soluble plant foods come in a robust, resealable pouch with a measuring scoop & instructions for easy use and storage. Unlike nitrogen-based fertilizers, it is not possible to burn your precious plants with ENVY's Epsom Salts for plants.
BrandENVY #ad
ManufacturerNational Liquid Fertilizer #ad
Height8 Inches
Length4.5 Inches
Width3 Inches

5. Humboldts Secret


Humboldts Secret Calcium, Magnesium and Iron Supplement – Hydroponic Supplies – Liquid Nutrient Fertilizer – Supports Vegetative and Flowering Stage – 1 Quart

Humboldts Secret #ad - Corrects common plant deficiencies: sometimes an unhealthy plant may be suffering from a nutrient deficiency or even too much of one nutrient. Optimal for coco coir medium and reverse osmosis water: Our supplemental CalMag & Iron by Humboldts Secret is highly recommended for plants growing in coco substrate or reverse osmosis water, as the absorption process becomes magnified.

Nutrient uptake and absorption: this formulae efficiently supports nutrient uptake and absorption by addressing any plant deficiencies in the first place, thus successfully supporting the vegetative and flowering stage of your plants. Suitable for hydroponics, and container gardens: Nutrient systems and supplements are commonly used as hydroponic supplies and are a good solution for soil and container gardens, soil, ensuring strong and healthy plants and yields.

Source of calcium magnesium & chelated iron: Many varieties of flowering plants require higher levels of these micronutrients. Our calmag & iron supplement effectively corrects and remedies these micronutrient plant deficiencies. Our well-balanced formula is designed to specifically address any plant deficiencies that may be present.
BrandHumboldts Secret #ad
ManufacturerHumboldts Secret #ad



ENVY CalMag+ Fe 4-0-0 Professional Grade Calcium, Magnesium and Iron Liquid Plant Food | Superior Calcium Source No Calcium Chloride 8 oz

ENVY #ad - While it performs well, essential nutrients become locked up in its fibers. Superior cal-mag - envy's calmag+ is derived from a superior source of Ca, Calcium Nitrate. 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.

Corrects coir nutrient lock up - coco-coir is a popular growing media for hobbyist and professional gardeners alike. Our concentrated CalMag+ replenishes nutrients lost to lock-up. 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.

Most calmag blends you will find are created by blending Calcium Chloride, which is less friendly for plants and hydro systems. Perfect for r. O. While R. O. Formulated to replace minerals depleted by reverse osmosis water applications.
BrandENVY #ad
ManufacturerNational Liquid Fertilizer #ad

7. Dutch Science Nutrients


Dutch Science Nutrients Cal-Mag Plus Humates, Calcium & Magnesium Supplement Fertilizer for The Prevention & Repair of Common Plant Nutrient Deficiencies 1.1 lb

Dutch Science Nutrients #ad - Our nutrients can be used in soil, coco, or hydroponic home grow systems. This helps keep your nutrients fresh and effective. Creates 160 gallons of nutrient mixture. Contains organic humates - they help your garden retain more water, increase root and plant strength, and help your plants absorb more nutrients. Easily mix in the nutrients you need with fresh water, store the rest. Repairs and prevents calcium and magnesium deficiencies, speeds up plant growth, and produces better yields.
BrandDutch Science Nutrients #ad
ManufacturerDutch Science Nutrients #ad

8. Opulent Blends


Opulent Magnesium | 16 fl. oz. | Liquid Magnesium Fertilizer | Magnesium Amino Acid Complex | Macronutrient

Opulent Blends #ad - Helps with growing roots and developing seeds, and serves as an enzyme activator. Aids in fruit maturation and sucrose transport in the phloem. Guaranteed analysis: Magnesium Mg. 6. 1%. Derived from: Magnesium Amino Acid Complex. Aids in chlorophyll formation, photosynthesis, absorption and utilization of other nutrients, especially phosphorus and iron.
BrandOpulent Blends #ad
ManufacturerOpulent Blends #ad
Height6.25 Inches
Length4.5 Inches
Weight1.5 Pounds
Width1.88 Inches

9. Monterey


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

Monterey #ad - 4-pound. Fast-acting results - magnesium is absorbed through the roots or foliage of the plants to help them produce chlorophyll. Organic gardening - our product is omri listed and approved for organic gardening. It also helps plants absorb phosphorus. Epsom salts. Epsom salts is a source of magnesium that is required by plants to produce chlorophyll in order to carry on photosynthesis.

It is quite mobile in the plant and is readily translocated in the leaves from the older plant tissue to the new growth. 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. Omri, the organic materials review institute, determines whether or not a product qualifies as organic under the USDA's National Organic Program.

Corrects magnesium deficiency - if a plant is deficient in magnesium, its ability to carry on photosynthesis is decreased. Absorbed through the roots and foliage to help plant produce chlorophyll. 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. Promotes blooms in roses and other flowering plants.
BrandMonterey #ad
ManufacturerMonterey #ad
Height4 Inches
Length6 Inches
Weight4.2 Pounds
Width6 Inches
Part Number704623

10. GS Plant Foods


Iron and Sulfur Supplement, N-P-K of 2-0-0, Magnesium, GS Plant Foods Cal-Mag Extreme Liquid 1 Gallon Fertilizer with Calcium, Corrects Secondary Nutrient & Trace Element Deficiencies

GS Plant Foods #ad - We all know plants need adequate primary nutrients nitrogen, they also need the right amount of both secondary nutrients and trace elements or micro-nutrients. Gs plant foods’ cal-mag extreme solves the problem.

Beneficial to plants throughout all growth cycles and easily mixes with water to use during irrigation or as a foliar spray. Even with the right amount of n-p-k, a small deficiency in either secondary or micro-nutrients can severely limit plant health, phosphorous and potassium however, growth and yield. Formulated for use in all soil, container, coco and hydro growing. It contains calcium, iron, manganese, sulfur, Zinc, Magnesium, Boron & Molybdenum all in an immediately plant available form with natural chelates for fast plant absorption. Easy-to use just mix with water.
BrandGS Plant Foods #ad
Part NumberCMextGal