Forum du Tutorat de Santé de Tours

Timing matters once you decide to keep a male, because pollen sacs open fast and a single one can seed an entire room. Moving him to a separate space or a different building the moment sacs form is the only safe approach. Collection methods using paper and a fine sieve are described on https://breederregularseeds.com along with how to store pollen in the freezer for later use. Plenty of people learn this the hard way and end up with a seeded crop they never wanted.