Home Lifestyle Weird mushroom facts we bet you didn't know

Weird mushroom facts we bet you didn’t know


One of the great things about mushrooms is that they’re in season all year long. They’re also a great source of vitamins D and B and, above all, an awesome meal stretcher and side dish.

A mushroom is a fungus, which means it grows optimally in warm, damp and dark conditions from a compost-like substrate. Wilmaré Lotz, the owner of Boland Mushrooms in the Western Cape, says the quality of compost is directly related to the quality of the mushrooms, as they feed off the proteins in the substrate. She makes her own compost on her farm.

  • Waste materials from wheat farms (straw) and chicken farms (manure) is used in the compost making process. “If the wheat farmers have a bad harvest, we have a bad year as well,” says Lotz. Compost is pasteurised before it is spawned with mushroom spores.

Mushroom spawn, produced and supplied by a laboratory in Gauteng
Mushroom spawn, produced and supplied by a laboratory in Gauteng

  • Because mushrooms are classified as fungi and not plants, their “seeds” are called spawn. All mushroom spawn in South Africa is supplied by a laboratory in Irene in Gauteng.
  • Boland Mushrooms is a bag far, meaning a large bag is used for growing plants. Bigger farms can grow mushrooms on trays or flatbeds. Growing chambers don’t receive fresh air during the first growth stages.
  • After the compost is spawned, they undergo a two-week spawn run. A top layer of peat moss, imported from Ireland, is used as casing soil on each bag to stimulate the growth of thousands of threads, or mycelium. All this happens at a warm 25 °C.

Mushroom farming is done indoors
Mushroom farming is done indoors

  • When the grower suddenly set cooling units to temperatures below 20 °C, and introduce fresh air for the first time, the mycelium start to lump together and form mushrooms.
  • Mushrooms can double their size in 24 hours and one bag of compost produces three flushes of mushrooms for harvest. The Boland Mushrooms farm yields 25kg of mushrooms per square metre.
  • After they had been harvested, mushrooms are kept at 2 to 4 °C.

Find out more about Wilmaré Lotz, owner and manager of Boland Mushrooms, a well-established mushroom concern in the Western Cape.

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Elana van der Watt
Elana van der Watt
Elana van der Watt is a freelance reporter with extensive experience in community journalism. She started her career as intern at the Worcester Standard and moved through the ranks to the editor’s position and digital editor of the Boland Media group. She has since gone solo.


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