The Farm, 680 Muhunoa West Road, Ohau 5570 (towards the coast from SH1 just south of Levin)
The mushroom farmers hot-line: +64 204 098 5657

It takes about 4 days, from the baby mushrooms first appearing, for them to be ready to harvest,

When they look ready PICK! Simply pluck or use a sharp knife …else you might end up with a spore storm. If they do spore, the mushrooms are still good to eat