Growing Coprinus comatus

[Joseph Ventimiglia]

Has anyone had any luck in getting Coprinus comatus to fruit in warm
California weather?  I have inoculated a four foot square wooden box filled
with compost and horse manure and straw with C. comatus spawn.  I have
check the material from time to time over the last several months and it
contains vegetative mycelium, but it refuses to start pinning.  I have been
keeping it moist and out of the direct sun, but still no luck.