Magnisum sulfate 768x562

Magnesium Sulfate (Epsom Salt)


Magnesium sulfate, commonly known as Epsom salt, is a valuable nutrient for hydroponic systems.  When used appropriately, it offers several key benefits that contribute to the health and vigor of hydroponically grown plants.

  • Cost-effective and easy-to-use
  • 100% water soluble
  • An essential macronutrient required for photosynthesis, enzyme activation, and overall plant health
  • Improves photosynthetic efficiency and increases chlorophyll production for more robust growth
  • Improves the quality and flavour of many herbs as well as fruiting crops such as tomatoes and peppers
  • Helps ensure proper stomata function for efficient nutrient absorption and a balanced nutrient profile within the plants
  • Helps plants cope with environmental stressors such as large temperatures changes and nutrient imbalances
  • Creates a nutrient rich solution that contains all the macro and micro nutrients for your plants to thrive when used with Masterblend (4-18-38) and Calcium Nitrate (15.5-0-0) (sold separately)

IMPORTANT: Always test your water and determine the lack of nutrients prior to treatment!

Magnesium deficiency is a common problem in hydroponic systems, particularly when using soft water or water sources with low magnesium content. Signs of magnesium deficiency include yellowing of older leaves, interveinal chlorosis, and poor plant growth. By regularly incorporating magnesium sulfate into your nutrient solution, you can prevent these issues and maintain optimal plant health.

Application Notes

Mix according the instructions on the product label.

Other Uses

  • Houseplants: 2 tablespoons per gallon of water; feed plants monthly.
  • Roses: 1 tablespoon per foot of plant height per plant; apply every two weeks. Also scratch 1/2 cup into soil at base to encourage flowering canes and healthy new basal cane growth. Soak unplanted bushes in 1 cup of Epsom Salt per gallon of water to help roots recover. Add a tablespoon of Epsom Salt to each hole at planting time.
  • Shrubs (evergreens, azaleas, rhododendron): 1 tablespoon per 9 square feet. Apply over root zone every 2-4 weeks.
  • Lawns: Apply 3 pounds for every 1,250 square feet with a spreader, or dilute in water and apply with a sprayer.
  • Trees: Apply 2 tablespoons per 9 square feet. Apply over the root zone 3 times annually.
  • Garden Startup: Sprinkle 1 cup per 100 square feet. Mix into soil before planting.
Weight N/A
Dimensions N/A

500 g, 1.5 kg, 2.5 kg, 5 kg