Apple Tree Decline and Lawn Thickening: Separate Issues, Different Solutions

Reader Question: Two Issues – Sick Apple Trees (New England) + Thin New Lawn on Clay

"1) Apple trees (8 ft) leaves look dying. Never fertilized. Tons of rain. 2) Second-year lawn on minimal topsoil over clay. Overseeded with starter fertilizer. Want to use Miracle-Gro hose sprayer every few weeks. One area holds standing water."

Expert Answer: Two Different Problems

Apple Trees

• Fertilize in late spring with 10-10-10 under canopy.
• But symptoms suggest disease/structural issue, not hunger. Hire an arborist—fertilizer won't fix root rot, borers, or fire blight.

Lawn on Clay

• Cool-season grass (New England) = NO summer fertilizer. Miracle-Gro every few weeks in summer will weaken turf, invite disease.
• Fertilize lightly in spring (done), then heavily in early Sept and late Oct.
• Standing water area: Fix drainage (French drain, regrade) or plant water-tolerant species. Fertilizer won't fix wet feet.
• Core aerate annually to improve clay structure.

Thick lawn comes from fall feeding, aeration, and proper mowing—not summer spoon-feeding.