Perlite is a soil additive that can also be used as a growing medium.
Potting soil alternatives are made from a variety of blended materials. Such ingredients include mosses like peat or sphagnum moss, rocks and minerals like calcined clay, vermiculite, sand or perlite.
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Leca is an alternative way to grow your plants, not using any soil.Leca makes for a superlative growing medium for most house plants. It's odorless, eco-friendly and reusable for starters. These little clay pebbles can hold up to 4 times their weight in water. And they allow air and water to move freely throughout the growing medium so that your plants can breathe
Coco coir growing media is made of 100% natural and eco-friendly seed-starting grow pellets, made from sustainable coconut fiber. You don’t need to have a green thumb to grow delicious fruits and vegetables with this potting soil. Easy to use nutrient rich grow discs are great for growing the perfect garden.
The whole world of horticulture uses white peat as growing media, so far no adequate replacement for peat has been found, it still is the most plant friendly environment available. The high share of organic matter which attracts microflora necessary for nutrient and water transport, high porosity and thus buffering ability, water retention capability are just a few in the row of advantages of peat.