By Mowerman
East Sussex coast,
United Kingdom 
I’m mixing topsoil with compost from a compost heap to fill newly installed raised veg beds.
I’ve noticed a white fungus in the compost which appears to be actinomycetes according to this website https://www.gardeningknowhow.com/composting/manures/fungus-growing-on-manure.htm
Is this compost safe to use ?
Thanks
Roy
31 Jan, 2019
Answers
Yes it is fine to use. Actinomycetes are now classified as a bacterium but either way you name it is a sign that composting has gone well. It should cause any problems in your soil/compost mix.
31 Jan, 2019
Thanks folks.
(Seaburngirl - I assume you meant to say 'shouldn't', but thanks anyway.)
Roy
31 Jan, 2019
oops yes I did mean shouldn't.
1 Feb, 2019
May well help to limit 'damping off' too
1 Feb, 2019
Honestly, I think it's fine to use. The fungus is simply part of the composting process. It consumes dead organic matter. It's obviously still at work but will eventually disappear. You can leave it until the composting process is complete. Other microbes in the soil will offset it once you mix it into the top soil. Certain fungi is necessary for plants to thrive.
31 Jan, 2019