algae/mould

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AndyTwin
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Posts: 6
Joined: Fri Jun 03, 2016 2:09 pm

algae/mould

Postby AndyTwin » Sat Mar 20, 2021 2:23 pm

Hi all.
Why in my unheated greenhouse has the surface on my seedling compost started to turn a green mouldy/algae green. In time will the seedlings perish because of this.

Many thanks
Andy
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Monika
KG Regular
Posts: 4397
Joined: Thu Jul 06, 2006 8:13 pm
Location: Yorkshire Dales
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Re: algae/mould

Postby Monika » Sat Mar 20, 2021 4:38 pm

Mine do that sometimes, AndyTwin. I think it's algae and occurs when the compost is very damp. I use a fine little plastic 'fork' (or even sometimes a kitchen knife) to break the surface between the seedlings to let the compost breathe and dry. Unless you really leave it to cake the entire surface, I on't think it will harm the seedlings.
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