Mushroom Compost

JC92 · May 11, 2021

Would growing my weed in just mushroom compost be ok? I see that mushroom compost is high in salts but also read that weed isnt a salt sensitive plant.

Trfsrfr · Jul 6, 2021

JC92 said:
Would growing my weed in just mushroom compost be ok? I see that mushroom compost is high in salts but also read that weed isnt a salt sensitive plant.

Wow, no replies in 6 weeks.
I dont know the answer but I add it to my mix.
I have read that growing in compost alone is not beneficial.

LexLuthor · Jul 6, 2021

I would say no, but did you try it? How'd it go?

ezenzyme · Jul 6, 2021

Mushroom compost bought from stores is a false ideal. Its called mushroom compost cus in theory you can a mushroom out of it, but it reality is a tiny ammount of low quality compost mixed out with peat and some cheapo ammendments. That being said mushroom compost will work in lu of better soils in a pinch. But dont think for a sec that its good compost. All store bought compost is crap, you gotta make yer own if you want the good good

LexLuthor · Jul 6, 2021

ezenzyme said:
Mushroom compost bought from stores is a false ideal. Its called mushroom compost cus in theory you can a mushroom out of it, but it reality is a tiny ammount of low quality compost mixed out with peat and some cheapo ammendments. That being said mushroom compost will work in lu of better soils in a pinch. But dont think for a sec that its good compost. All store bought compost is crap, you gotta make yer own if you want the good good

Store bought mushroom compost is a soil amendment and is not to be used as a soil substitute. The directions on the bag clearly state it is to be added to soil, or top dressed similar to worm castings.

friendofblacky · Nov 17, 2025

LexLuthor said:
Store bought mushroom compost is a soil amendment and is not to be used as a soil substitute. The directions on the bag clearly state it is to be added to soil, or top dressed similar to worm castings.

I mix mushroom compost at 50-50 with searles premium potting mix which has a pH of 5.3 . So I add the mushroom compost to it which has a pH of 7.0 and when mixed the pH is at 6.2.
Absolutely perfect for growing cannabis . It's all about non toxic compost with low ec and correct pH , then add nutrients :) happy days
Trust me , grower of 25 years . This works perfectly

Mushroom Compost

Mushroom Compost

JC92

Trfsrfr

LexLuthor

ezenzyme

LexLuthor

friendofblacky

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