Diagnosing Red Sunset Maple Decline in Clay Soil

Maples planted October 2008 in heavy clay show red/brown leaves by summer 2009. Suspected overwatering, but the real issue may be planting hole glazing—smooth hole walls create a "pot" trapping roots and water.

Diagnostic Steps

1. Check soil hardness outside root ball vs. inside with a soil probe.
2. Use moisture meter near trunk and beyond root ball—compare readings.
3. Confirm burlap/wire were removed at planting.

If roots haven't expanded beyond the original ball, the tree is effectively containerized in-ground. Waterlogged or dry conditions in the "pot" cause decline.