Vermiculite
Heavy metal test results and harmful bacteria in Vermiculite stone of SCG Vietnam Joint Stock CompanyKết quả test thử nghiệm Vermiculite của VINASCG 2019
- Characteristics of Vermiculite stone:
Vermiculite is best used for plants that need moist soil. For plants that like water, using vermiculite or mixing a spoon of it into your gourd soil is the best way to be highly effective. It can absorb 3 to 4 times its volume when adding water. 
What is Vermiculite stone – how it works
Vermiculite interacts with potassium, calcium and magnesium in your soil. It also helps to increase the pH of your plant although it has a neutral pH of 7.0. Vermiculite is made from a compressed dry piece of absorbent silicate material. The color of vermiculite is a golden brown to a dark brown. When water is added to vermiculite, the pieces will expand into a worm-like shape and act as an absorbing sponge. You may want to touch their beads as soon as you see them.
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