Junipers and Boxwoods Declining in Michigan: Water and Soil Issues

In a Michigan landscape, boxwoods yellow away from the house and junipers brown despite daily irrigation. The site has afternoon sun, mulch, and clay soil—classic overwatering in poorly drained soil.

Diagnosis

• Junipers need excellent drainage; daily 20-min watering keeps clay saturated.
• Boxwood yellowing away from house suggests uneven water distribution or soil variation.
• Fertilizer spikes (Jobes) added in August may have burned stressed roots.

Action Plan

1. Stop irrigation in that zone. Check soil moisture before any watering.
2. Soil test via Oakland County Extension (248-858-0880) to guide fertilization.
3. Inspect stems at soil line for mechanical damage (string trimmer).
4. Wait until spring to assess juniper survival—scratch bark for green.
5. Burlap on Japanese maple: OK for wind protection; remove on warm sunny days.

Key Principle

"Test, don't guess." Soil test results prevent wasted fertilizer and reveal pH/drainage issues. Extension services offer free/unbiased advice.