Agaricus bisporus

White Button Mushroom

Strain: M 7218

 compost mushrooms flush growing in bed


  • Excellent, medium-size mushroom strain
  • Ability to produce larger as well as smaller mushrooms
  • Very good quality for the fresh market


Versatile strain, very popular strain type worldwide. It also has the ability to produce both high-density medium and larger sized fruitbodies and maintains high yields in both cases, even though picking is easier when the fruitbodies are grown to medium size. The caps are smooth and rounded. 



Recommended substrate

traditional or synthetic Agaricus-compost


8-10 litre spawn / ton

humidity: 66-70%
N level: 2.2 à 2.4%
level of ammonia: max. 0,05% (500 ppm)


compost temperature:

23-27 °C


13-17 days

CO2-concentration: 5000-12000 ppm
Casing soil humidity: 72-76 %
thickness: 3,8 à 5 cm
  • either deep ruffling, 8-9 days after casing
  • either apply cac-ing
Ripening phase room temperature: 23-27 °C
relative humidity: 95-99%
CO2-concentration: 5000-12000 ppm

Fruiting induction


20-21 °C

air temperature: 17-18 °C

relative humidity:

90-95 %

CO2-concentration: 1000-1200 ppm


2 to 5

Total production cycle

from the end of incubation: 5 to 11 weeks

Average yield

30 à 35 kg/ m² at a fill weight of 90 kg/ m² fully grown compost

 Important remark: the cultivation guidelines in our technical data sheets are a compilation of the data given to us by experienced cultivators.  Individual differences in the cultivation conditions can seriously affect the results.