Mushrooms in grow bags
Mushroom farms have huge sheds with bags of substrate or compost specifically designed to grow mushrooms. It’s a very sterile environment and they grow quite large volumes but they turn over their compost bags weekly when they clean out their sheds. We live close to quite a number of mushroom farms so are adidas superstar lucky enough to be able to source mushroom compost very cheaply and in bulk when we want to. We generally order and go at a specified time to collect with our trailer. It’s a very popular by product and a way to recycle organic material back into the earth.
There are some farms that sell the spent mushroom bags that have grown the Swiss brown variety and I think these are the pick of the bunch if you want to grow them on. Swiss browns are not sprayed with fungicides during production like the buttons are so are healthier. You can also get the button mushroom compost. You might be able to see the tiny mushroom spores growing in the photo below:
Mushroom compost for use in the garden in general has pros and cons it is sterile because the medium mushrooms grow in has to be free of any other fungi spores or bacteria. So it hasn’t got any beneficial living microorganisms when you reuse the bags in the garden. It can be slightly alkaline (around pH 8) and the bags are VERY heavy and often wet so they can be messy to collect, but DO provide you with bulk organic matter adidas superstar if you need to build it quickly in your garden. You can add the microorganisms later to activate it or put it through your regular compost system. It does generate quite some heat as it breaks down.
On the up side re growing mushrooms in the spent compost, we discovered this was possible mostly by accident. We collected a pallet load and it’s a big job to unload them all as they are so heavy, so we didn’t have time to add them into t adidas superstar he garden the same day. The next day, we noticed mushrooms had sprouted during the night with the colder air outdoors and we thought we’d save a few bags from the garden and put them aside to see if more would grow. Sure enough they did. We just misted them with water and the remaining mushroom spores fruited. When they stopped growing we collected more bags and repeated the process. We stored them in a dark cool room. We also got higher production by misting them with humic acid adidas superstar which feeds the spores. These were the very first ones we grew:
Comment by Anne Gibson on July 19, 2011 at 12:35
I’m north of Brisbane on the Sunny Coast in the hinterland no it’s not colder but we used a shed to keep them cool and also because the bags are a bit messy.
Yes Scarlett we are basically maximising the second flush from the bags (why not it’s free!) When they are really completely spent we just recycle the compost into the gardens so there’s absolutely no waste. The compost is particularly good to build up organic matter fast for low cost on the parts of our property that have sandy soils.