Are perlite and vermiculite fertile?
The expansion effect of vermiculite in Horticulture: vermiculite have very strong water absorption, can effectively promote plant root growth and seedling growth is stable. Provide water and nutrients necessary for plant growth for long periods of time and maintain the stability of root sun temperature. At the same time, the vermiculite can make the crops get plenty of water and minerals from the early growth stage, and promote the rapid growth of plants and increase the yield. It can be concluded that vermiculite has a relatively large fertility, at least stronger than traditional soil.
The role of pearl rock in Horticulture: soil modification, regulating soil compaction, preventing crop lodging, controlling fertilizer efficiency and fertilizer, and being used as a diluent and carrier for pesticides and herbicides. It can be concluded that there is virtually no fertility.