Important points to remember about spawning include the complete and thorough mixing of spawn into substrate. Spawn is a cheap nutrient supplement, therefore if economical; a high spawning rate is desirable. Spawning should be the cleanest operation the farm, often performed early in the workday. During the spawn run, it is a good time to evaluate the crop and substrate. Spawn growth and the presence or absence of other molds helps to indicate how the composting process has been performed. It is important to anticipate temperatures by monitoring temperatures often and by probing establishing crop variation and trends.