Primordia Formation Procedures

Stage II Environmental Transition—The Prelude to Setting Primordia 

Pinhead initiation techniques should begin when the mycelium reaches the valleys of the casing surface. Once the mycelium is clearly established in the valleys, the cultivator can begin the first steps leading to the setting of pinheads. Within this one to two day period, the 

The carbon dioxide content of the room is reduced by the introduction of fresh air. 

The exact time for initiation varies with the strain and according to the experience of the individual grower. Some strains continue to grow vegetatively for a period after the initial temperature shock whereas others stop immediately. For this reason, some cultivators initiate when 20% of the valleys show mycelial growth while others wait until 90% are run through with mycelium. Normally within 12-4S hours from the time the mycelium is first visible in the valleys, the initiation sequence is started. 

Once substrate temperatures have been lowered and CO2 levels have been reduced, primordia will begin to form. Maintain  

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