So, I seem to be growing, for the second year, a REALLY healthy, LARGE (like, pounds...) crop of non-poisonous but bad tasting mushrooms in my greenhouse. The spores rode in last year on a load of bark. Aargh! I have the name of what they are written down somewhere, the local mushroom club came out last fall to ID them for me because I was worried about my birds.
I have tried Physan, which is the only thing labeled to kill mushrooms, and it hasn't made a dent. I pick them daily and throw them away.
I can't keep the floor dry because we flood irrigate, and it just comes in with no stopping.
I don't think I can physically dig up the floor without killing myself trying - it is about 6 inches deep with packed, composted bark, and some of the pots I would have to move are huge. Then there is the expense of replacing the bark...
I am trying REALLY hard to not resorting to permanently sterilizing the floor with vinegar because I don't know if it will work on mushrooms, I have a fair number of feral yams and other vines that I don't want to kill, plus, I am thinking that if mushrooms like my greenhouse so much, I should try my hand at morels!
My latest technique is pouring boiling water on the areas where I know there are spores.
Any other ideas?


Thanks!
Carolyn