yellow leaves on holly

Question

What can I do for yellow leaves? Is mushroom soil good to put on the ground around a tree?

Answer 1

This article will help with the yellow leaves on your holly:
https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-yellow-leaves.htm

Mushroom compost can be used around trees, but it is pretty strong, so it should be mixed with soil first and not placed directly against the tree trunk:
http://extension.oregonstate.edu/gardening/mushroom-compost-use-carefully
https://www.rhs.org.uk/advice/profile?PID=294