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What Do You Grow in Vermiculite?

“What do you grow in vermiculite?” Question from Sara of Oroville, California

Answer: That’s an excellent question. Vermiculite is one of the most popular growing mix additives. The natural mineral pops up like popcorn when heated. Then it is processed into small pieces for use in potting mix. It provides mix with needed air porosity and it absorbs water and nutrients well for better root growth.  Vermiculite size dictates use. Coarse vermiculite is added to mixes formulated for growing larger plants while fine vermiculite is a popular ingredient in seed-starting mixes.

Fine vermiculite can be used alone to start seeds or root cuttings. It is also used for hydroponic growing. Growers and gardeners also purchase vermiculite to create their own potting mix formulations.

Happy gardening!

Jessie Keith

Black Gold Horticulturist

 

About JESSIE KEITH

Plants are the lens Jessie views the world through because they’re all-sustaining. (“They feed, clothe, house and heal us. They produce the air we breathe and even make us smell pretty.”) She’s a garden writer and photographer with degrees in both horticulture and plant biology from Purdue and Michigan State Universities. Her degrees were bolstered by internships at Longwood Gardens and the American Horticultural Society. She has since worked for many horticultural institutions and companies and now manages communications for Sun Gro Horticulture, the parent company of Black Gold. Her joy is sharing all things green and lovely with her two daughters.

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