Ask a Question forum: mushroom Compost

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Bullhead City, Arizona
Jul 8, 2017 7:14 AM CST
Summer days have been 115-121 every day for over a week now only cools down to 87 or so at night. Plants are very stressed. Is mushroom compost too "hot" to use as mulch under bark chips? I have been using about 1" mushroom complost, 3 inches gro-mulch and 3 inches uncolored bark chips under plants, but away from trunks. Not sure if the very hot weather or the mulch combo is the problem.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Jul 8, 2017 11:49 AM CST

Its probably the weather. What kind of plants are you talking about? What are they doing to make you think they are stressed? Maybe a couple photos will help?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Jul 8, 2017 1:35 PM CST
Welcome! Seven inches of mulch seems rather a lot unless it is around mature trees? Gromulch apparently is made from sewage sludge. Does the label say it is OK to use it as deep as 3"?
Bullhead City, Arizona
Jul 9, 2017 9:20 AM CST
According to the label, 3" of gromulch is recommended for trees and shrubs. I did read on the internet something about it being made from "sludge" but the label says:

Organic 2 in 1 potting mix and mulch.
"Composted rice hulls, aged recycled forest products, aged arbor fines, composted dairy manure, composted poultry manure, gypsum, dehydrated poultry manure, hydrolyzed feather meal".

7 to 10 inches of mulch seems to be recommended here. I usually use about 5-6.

My Black Mission Fig 2 years in the ground here about 4" feet tall has lost all of its leaves. They just dried up and died. My Navel Orange has very yellow leaves. My Meyer and Lisbon lemons ( 15 year old on west side of house but get late afternoon shade from the neighbor) have the top leaves drying up. Looking around the neighborhood there are many trees in the same condition.

I have Sisso trees, one ash or elm not sure which, Chaste trees, firecracker bush, and a few other desert plants that all look great.

I have to admit though, I did not get the mulch replaced around the trees until the start of the extreme heat. I had just never used mushroom compost before and wasn't sure about the "heat" factor. Mushroom compost was not applied until after the problem.

I'll try to get some pictures later today.


[Last edited by craftygramz - Jul 9, 2017 9:22 AM (+)]
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