Big Leaf Maple
Acer macrophyllum
- Deciduous
- Broadleaf
- Full sun
Large-leafed native maple, slower to ramify; best in larger sizes or naturalistic styles.
Zone 8b notes
Protect roots if temps < 20 F
Care profile
Placement
Full sun
Hardy species; prefers consistent sunlight.
Watering
Moderate
Avoid waterlogging; prefers well-drained soil.
Fertilization
Balanced
Feed monthly in growing season; reduce in late summer.
Wiring
Spring or Autumn
Branches are brittle; wire when flexible.
Pruning
Structural in early spring, maintenance through summer
Hard prune before bud break to shape.
Repotting
Every 2-3 years
Use coarse mix; avoid overpotting.
Propagation
Cuttings or seed
Seedling development takes time but worthwhile.
Winter notes
Fully hardy but mulch roots in extreme cold.
Summer notes
Water deeply and regularly in hot weather.
Current phase
Early Summer- Watering
- Deep water regularly—pots warm up quickly in heat.
- Fertilization
- Continue balanced feed every 2 weeks.
- Pruning
- If leaf size becomes excessive, consider partial defoliation.
- Wiring
- Minor wiring for refinement before tissue hardens.
- Defoliation
- Partial defoliation after first flush can reduce leaf size.
- Pests Disease
- Watch for mites; treat with horticultural oil if needed.
- Summer Protection
- Provide afternoon shade during heatwaves.
