My husband put about 4 inches of horse manure on our raspberry, strawberry, concord grape and apple tree plants! The manure was shoveled off the ground and was about 3 months dried out but still in balls! It seems that it killed all plants and now the tree is beginning to turn brown! I've taken the manure out that I could and added plain topsoil, but it doen't seem to help stop the dying. What else can I do to save anything?? I'm desperate!
Horse Manure Killed Plants
Certified GKH Gardening Expert
There may be too much nitrogen in the soil and it burned the roots. Fresh manure could burn the roots and cause issues like this, even death to the plants. The manure should be aged at least over winter to fully cure enough to put around plants, especially that amount. You could try flushing the area with water to see if that helps, but unfortunately, that's really all you can do.