Diagnosing Dead Spots in Red Apple Groundcover

A homeowner in El Cajon, California reports mysterious dead spots in their red apple groundcover (Aptenia cordifolia) that appear as if someone deliberately walked through the planting. Despite regular fertilization service, large brown patches persist.

Two Likely Culprits

Gopher Damage

The most probable cause is gopher activity. These rodents eat roots or create tunnels that destroy the root system, resulting in the distinctive dead patches. Gopher damage often appears as irregular brown areas where the plant simply dies from lack of root support.

Fertilizer Burn

The second possibility is improper fertilizer application. If the fertilizing company concentrates product in certain spots rather than spreading evenly, the excess salts can cause fertilizer burn—essentially chemically scorching the plants. This creates dead zones that match the description.

Recommended Action

Inspect the affected areas for signs of tunneling or soil mounds indicating gophers. If gophers are present, trapping or baiting may be necessary. If the damage pattern suggests fertilizer burn (often more geometric or linear), discuss application practices with your service provider. Proper diagnosis is key—treating for the wrong cause wastes time and money.