Harvest casings all together over a course of 1 day for best results.
Harvest cased trays all together over a course of 1 day for best results. If you have achieved an even pin set, your fruits should all become mature at the same time - meaning you can harvest them at the same time. Generally, if they are becoming mature at different times, this means you didn't have an efficiently colonized substrate or an even pin set. Harvest can occur right after the veil breaks, up until full maturity when the cap becomes almost convex and begins drop its spores. You should wait this long if you want to make spore prints.