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Intermediate Cultivation
Elm Oyster

Strain Profile

The Elm Oyster mushroom is a relatively uncommon species of Oyster mushroom.  Closely resembling Pleurotus Oyster Mushrooms, but held consensus is that Elm Oysters are superior in flavour and texture.

Yields can be far greater than Pleurotus Oyster species. Grown indoors on supplemented hardwood sawdust, you can expect a Biological Efficiency of 100-200%.  

As opposed to Pleurotus Oysters, H ulmarius should not be harvested too early, as it will continue to increase in mass past the broad-convex cap upturn which usually signifies peak maturity of Oysters.  Even fully mature Elm Oysters are superior in terms of edibility to Pleurotus of any maturity. 

Most commonly found growing on Elms, beech, maple, willow, and oak.

This strain fruits from 13-18˚c.  

Preferred agar culture media:  MYA/PDYA

Preferred substrate:  Supplemented Hardwood Sawdust

Also Known As: 

  • Shirotamogitake (Japanese for “White Elm Mushroom”)

Growing Parameters

Spawn Run

Temperature: 21-27°c
Relative Humidity: 95-100%
Duration: 14-28 days
CO2: >10,000pm
Fresh Air Exchanges: 0-1 per hour
Light Requirements: n/a

Primordia Formation

Temperature: 10-13°c
Relative Humidity: 98-100%
Duration: 5-10 days
CO2: <1000 ppm
Fresh Air Exchanges: 4-8 per hour
Light Requirements: 500-1000 lux

Fruiting

Temperature: 13-18°c
Relative Humidity: 90-98%
Duration: 4-7 days
C02: 500-1500 ppm
Fresh Air Exchanges: 4-8 per hour
Light Requirements: 500-1000 lux 

Pre-Poured Agar Plates

MEA, MYA, PDA, PDYA, Activated Carbon
In a range of colours!
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