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Apr 28, 2018 1:44 PM CST
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I have had this problem with my greenhouse soil for the last couple of years - and it seems to be getting worse.
I have this mold-looking stuff in the soil, it looks like fine dust on top of the soil - see attached photos.
Can anyone offer any advice?
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Apr 28, 2018 1:48 PM CST
Name: Karen
New Mexico (Zone 8a)
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Welcome! @Andreeaip! Where are you located? How often do you water? What are the average max and min temperatures of your greenhouse? What do you grow? Sorry for all the questions, but we need a bit more information and photos of your plants and greenhouse would be nice. I've never seen anything that looked like that.
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Last edited by plantmanager Apr 28, 2018 1:49 PM Icon for preview
May 15, 2018 10:24 PM CST
Talladega, AL (Zone 7b)
Give back to Mother Earth
In the winter months, I have to use a lot of fungicide sprays. Being closed up in Alabama zone 7b is a haven for mold on tables, gravel floor and plants. Fortunately, summer turns it into a hot house. Nothing survives.
..... and we’ve got to get ourselves back to the garden.
- Joni Mitchell
May 16, 2018 12:57 AM CST
Name: Bea
PNW (Zone 8b)
Bulbs Native Plants and Wildflowers Spiders! Solar Power Hibiscus Hydrangeas
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Omg .. So sorry that is a nasty mess for sure to contend with. I thought I had it bad in the northwest when moss grows on everything from roofs to your toes if you stand in one place long enough even concrete and everything must be power washed every year including my little greenhouse.

Depending on the size of your greenhouse after spaying it, have you purchased fans to keep temps cooler and humidity down, also add a shade cloth/net to put over the entire greenhouse. All spores must be clean once sprayed, then power washed the entire inside with anti bacteria soap.Dispose of any soil contamination or plants. Keep all doors and windows open I assume you probably already do! Some greenhouse companies have a division to clean .

Contact your nearest greenhouse manufacturer on the style you have and ask for the products available to keep the spores from spreading once it's cleaned, and products to cool it down. I wonder if a electric mister for greenhouses with chlorine mixed with water would help during the heat of the summer no plants inside of course. Just a thought.

Good Luck
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Last edited by bumplbea May 16, 2018 1:09 AM Icon for preview
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