
Red Maple
Acer rubrum 'Autumn Flame'
Essentials
At a Glance
Plant Type
Tree
Height
600 inches
Width
480 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Medium to wet
Humidity
Adaptable
Lifespan
80-100 years
Native To
Eastern North America
Toxicity
Wilted leaves are toxic to horses
The Story
Plant Bio
Acer rubrum is a widespread and adaptable deciduous tree native to eastern North America, celebrated for its brilliant fall color and early spring flowers. It has a rounded to oval crown and smooth gray bark when young. 'Autumn Flame' is one of the first red maple cultivars to color up in the fall, developing an intense, brilliant scarlet-red display. It has smaller leaves than the species and a dense, rounded habit.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Choose a site with full sun and moist, acidic, well-drained soil.
- Dig a hole two to three times wider than the root ball, but no deeper.
- Place the tree in the hole, ensuring the root flare is visible at soil level.
- Backfill with the excavated soil and water thoroughly to remove air pockets.
- Water deeply once or twice a week for the first growing season.
- Apply a 2-4 inch layer of organic mulch around the tree's base.
Pro Tip
Plant in acidic soil for the most vibrant red fall color; alkaline soils can cause chlorosis and muted colors.
Keep It Thriving
Care Guide
Do
- Water consistently, especially during dry periods.
- Protect the thin bark of young trees from mowers and string trimmers.
- Perform structural pruning when the tree is young to encourage good form.
- Monitor for pests like scale insects on the trunk and branches.
Don't
- Do not plant in high pH (alkaline) soils.
- Avoid planting too close to sidewalks or driveways as surface roots can be an issue.
- Don't pile mulch up against the trunk, as this can cause rot.
- Avoid heavy pruning, especially 'topping' the tree.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Red Maple questions
What zones can Red Maple grow in?
Red Maple is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Red Maple deer resistant?
Yes — Red Maple is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Red Maple bloom?
Red Maple typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Red Maple need full sun?
Red Maple does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
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