Story: Rock, limestone and clay

Mushroom farming

Mushroom farming

Bentonite clay can absorb a lot of moisture. This makes it useful for mushroom growers, who use it in a ‘casing medium’, which also includes peat and lime. The mixture covers the compost in which the mushrooms grow, trapping moisture and creating a damp, dense growing medium.

Using this item

Parkvale Mushrooms
Photograph by Clive Thompson

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How to cite this page:

Carl Walrond, 'Rock, limestone and clay - Types of clay', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/5253/mushroom-farming (accessed 20 June 2021)

Story by Carl Walrond, published 12 Jun 2006