What is perlite used for in vegetable seedlings?

Perlite is a common component of soil-less growing mediums for vegetable seedlings. It is used for its ability to improve soil aeration, drainage, and moisture-retention. Perlite is a volcanic rock that has been heat-treated to create a lightweight and porous material. This structure allows for the growing medium to hold water and nutrients without becoming waterlogged, which can be damaging to delicate vegetable seedlings. Perlite also helps to regulate soil temperature and prevent soil-borne diseases. It is often mixed with peat moss or coconut coir to create a well-draining, nutrient-rich growing medium for vegetable seedlings.

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