Kieserite, permitted as an organic nutrient source by the European Commission Regulation, is an earth mineral mined from naturally occurring marine deposits. Chemically known as magnesium sulphate monohydrate, it provides soluble sources of both Magnesium and Sulphur for plant nutrition, and is not effected by, or effects, soil ph. Essential for healthy leaves and photosynthesis, a deficiency in magnesium is common in tomatoes, apples, grape vines, raspberries, roses and rhododendrons.
Actual packaging may vary. Images are provided for illustrative purposes only.
Instructions on how to take your soil test, sample bag, and pre-paid envelope to send sample direct to independent lab. Test is for Phosphate, Potash, Magnesium and pH.
Results and recommendations are then sent via email.