How to Care for a Japanese Maple Tree

About Japanese Maples

The Japanese maple (Acer palmatum) is a deciduous broadleaf tree reaching 25 ft tall and wide. Foliage ranges from red to green, with fall colors from yellow to purple. Slow-growing and adaptable, it excels as a garden centerpiece, privacy screen, accent plant, or bonsai.

Essential Care Steps

Step 1: Water Deeply and Infrequently

Provide 1–1.5 inches weekly. Increase by ½–1 inch in hot, dry summers. Reduce during rain/cold; stop in winter. Resume after last spring frost.

Step 2: Fertilize in Early Spring

After last frost, apply balanced slow-release fertilizer (10-10-10 or 20-20-20) evenly around the base, 1 ft from trunk. Water in with 1–1.5 inches.

Step 3: Prune Regularly

Major pruning in late fall after growing season. Remove dead/dying wood. Thin for interior air flow. Shape to desired size/form.

Step 4: Disease Prevention

Protect against anthracnose, leaf spot, powdery mildew. Keep area clean of debris/weeds. Remove dead/wilted material. Apply annual fungicidal spray.

Step 5: Mulch for Protection

1-inch layer around trunk prevents canker. Increase to 2–3 inches in late fall for winter insulation.