Wine cap (garden giant)
Stropharia rugosoannulata
The permaculture mushroom par excellence, nicknamed 'Garden Giant': it grows right among the vegetables and digests the mulch into humus while giving a harvest.
Partial shade
Role in permaculture
Growing this mushroom
- Method
- Wood chips in open ground, in the paths and beds of the vegetable garden
- Substrate
- Fresh hardwood chips or shreddings, ideally mixed with straw. A species domesticated in Germany from the late 1960s, then popularised in myco-permaculture by Paul Stamets (Mycelium Running, 2005), who made it the building block of wood-chip-bed cultivation.
- Where to place it
- In the wood-chip paths between the growing beds, and as mulch at the foot of crops that like shade and root humidity: tomatoes, squash, beans, maize. A partly shaded spot, under the cover of tall vegetables or in the shade of a hedge.
- Period
- Inoculation in spring or autumn (mycelium active from April to October); fruiting mainly in late summer and autumn.
- Level
- Beginner
Steps
- Spread a layer of hardwood chips (~10-20 cm), moistened to the core.
- Alternate layers of substrate and spawn (inoculated sawdust or grain), sandwich-style.
- Cover, water, and keep humid like a wrung-out sponge for the first few weeks.
- The mycelium colonises in a few weeks to a few months; first fruitings from the end of the 1st season to the 2nd year. Top up with fresh chips each year to maintain the station. Pick young, when the veil under the cap has just torn.
Precautions
Always confirm the identification before eating: as an adult, the wine cap (a large wine-to-brown cap, gills turning grey-violet to blackish, a thick rough ring) is recognisable, but its wood-chip bed is also the habitat of the funeral bell (Galerina marginata), a small brown DEADLY species (amatoxins): never eat a young, small, or doubtful specimen that appears in the mulch without certain identification. At the slightest doubt, have it validated by a mycology referent (Société Mycologique de France).
Sources: Paul Stamets, Mycelium Running (2005) et Growing Gourmet and Medicinal Mushrooms (2000), Ten Speed Press · Tradd Cotter, Organic Mushroom Farming and Mycoremediation, Chelsea Green, 2014 · Milkwood, « Making a wood chip mushroom garden » (2013), milkwood.net · Gong S. et al. (2018), « Effects of wine-cap Stropharia cultivation on soil nutrients and bacterial communities in forestlands of northern China », PeerJ, DOI 10.7717/peerj.5741
Good companions
Fix nitrogen from the air (legumes)
Traditional companion planting (benefit not demonstrated)
Nutritional & medicinal properties
For educational purposes. Not a substitute for medical advice. Effects depend on the form, the dose and personal context.
Precautions & contraindications
Always cook thoroughly and introduce in small quantity, and only eat a formally identified specimen (risk of DEADLY confusion with the funeral bell in the wood-chip bed: see the cultivation section).
Key takeaways
- • Prefers partial shade exposure.
- • Classic companion: Squash.