*Please note this product is graded for agricultural use only under the law of Ontario. 

Epsom salt is one of the most affordable ways to add magnesium to your hydroponic solution. Magnesium offers several key benefits: it enhances the plant's ability to absorb other nutrients and promotes greener, healthier foliage.

Remember to use Epsom salt to enhance the blooms of flowering and green shrubs, particularly evergreens, azaleas, and rhododendrons. Mix one tablespoon of Ultra Epsom Salt per nine square feet of bush into the soil over the root zone. This helps the shrubs absorb the nutritional benefits.