White spots/dots on PF shrooms

Nan's Nook : Archives : Cakes : WHITE FUZZ : White spots/dots on PF shrooms
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By Mr. Tambourine Man (Tambourine_Man) on Thursday, January 03, 2002 - 07:12 am: The Nook

A FOAF has noticed white spots or dots on the caps of his immature PF shrooms that are growing on half pint cakes birthed into quart jars. They also seem to be growing very slowly. What could be the cause of this? Not enough humidity? Too much CO2?

By plinkerdink420 (Plinkerdink420) on Thursday, January 03, 2002 - 01:48 pm: The Nook

what are your temps at?... that could cause them to grow slowly... i have had white spots on my immature shrooms before and i don't think that they are an indicator of anything wrong, but i could be mistaken

By quote: (Quote) on Thursday, January 03, 2002 - 04:35 pm: The Nook

nope, white spots are common, nothing wrong there.

By relic (Relic) on Friday, January 04, 2002 - 04:38 am: The Nook

yeah, it's bit's of mycelium on them. perfectly normal. some strains have more of this than others. like these gt's for example,


those white 'spots' will turn into pretty little white flecks on the caps as the grow and enlarge.

By kobayashi (Impalerzz) on Sunday, January 20, 2002 - 09:24 pm: The Nook

What could these white spots on the caps of my young shrooms be indicating??

They are at 75f/ 82% humidity.

sorry about posting without searching..I got my answer..

By Spun Yun Gi (Spunion_Elf) on Sunday, January 20, 2002 - 10:54 pm: The Nook

No experience, but from what I've read they're probably just mycelium, an if I remember correctly they're caused by a slight lack of water in the cakes, or maybe low temps, I'm not too sure. It might be cobweb mold, but it's probably not a problem. Observe your shrooms for the next day or two and see if it spreads, if not it should be OK. (but don't take my word for it, I'm book smart, but have no first hand experience.)


By Cragith Kilbonith (Kilborn) on Sunday, January 20, 2002 - 11:21 pm: The Nook

It Should grow out of it.The Mushroom Cultivator has a good detailed explanation with pics...... maybe I saw it on a website I dont know (dont have my copy with me). Can you tell us what the spot looks like? Is it a spot or fuzzy? If you have pics it would help alot :)

By quote: (Quote) on Sunday, January 20, 2002 - 11:43 pm: The Nook

very common, no big deal.