These strains fruit best in the early Spring and late Fall when the nighttime lows approach 50 degrees. In the South, this translates to shiitakes in the Winter.  The spawn run takes approximately nine to 12 months at 75 degrees, and fruits in a temperature range between 45 and 70 degrees.

Warm Weather Strains:

This strain is the most difficult to categorize, as some behave more like a cold weather strain, while others behave like a wide range. In general, all warm weather strains have a longer spawn run period, produce nicer mushrooms (on older logs) in the Summer than the wide range strains, and are well-suited to indoor production. These should fruit in the Spring and Fall, with an occasional fruit in the hot Summer months. The spawn run takes approximately six to 12 months at 75 degrees, and fruits in a temperature range between 50 and 85 degrees.

Wide Range Strains:

This strain is a favorite of both commercial growers and beginners. Their reliable, fast spawn run and fruiting allows a relatively faster return on investment. Logs inoculated in the Spring and placed outdoors naturally produce a commercial crop the same as Autumn in southern climates. This strain can force fruit easily and recover vigor more rapidly after fruiting. Spawn run takes approximately six months at 75 degrees, and fruits in a temperature range between 55 and 75 degrees.

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