Species

Acer freemaniiFreeman Maple

5 other cultivars

treeN. America Native

Sienna Glen Maple

Acer freemanii 'Sienna'

The Story

Plant Bio

Freeman's Maple is a naturally occurring hybrid of the Red Maple and Silver Maple, combining the fast growth and adaptability of the Silver Maple with the stronger structure and superior fall color of the Red Maple.

Sienna Glen ('Sienna') is a standout cultivar known for its exceptionally uniform pyramidal form, strong central leader, and resistance to frost cracking. It offers reliable and attractive orange-red to russet-red fall color.

Uses & Benefits:

Sienna Glen Maple is a handsome shade tree with a dense, uniform canopy and beautiful, deeply lobed leaves. Its primary ornamental season is autumn, when it develops a consistently attractive rusty-red to orange-red fall color.

Its fast growth rate provides quick shade. The strong central leader and good branching structure make it a more durable and lower-maintenance choice than the Silver Maple parent. It is also highly adaptable to a wide range of soil conditions.

The early spring flowers provide a pollen source for bees. The tree offers shelter and nesting sites for birds. As a native hybrid, it is well-suited to the North American climate and supports local ecosystems.

SpeciesAcer freemaniiFreeman Maple

Essentials

At a Glance

Plant Type

Tree

Height

600 inches

Width

420 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Medium

Humidity

Adaptable

Lifespan

Long-lived tree

Native To

North America (Hybrid)

Toxicity

Non-toxic to humans, but wilted leaves are toxic to horses

Bloom period

Early spring

In flower about 1 month of the year

Planting

How to Grow

Select a location with full sun and ample room to grow.
Dig a planting hole two to three times wider than the root ball.
Set the tree so the top of the root ball is level with the soil.
Backfill with the excavated soil and water well.
Apply a 3-inch layer of mulch over the root zone.
Water regularly for the first two years to establish.

Pro Tip

Prune maples in summer after the leaves have fully developed to avoid the heavy sap 'bleeding' that occurs with late winter or early spring pruning.

Keep It Thriving

Care Guide

Do

Provide supplemental water during hot, dry summers.
Mulch to protect the roots and conserve moisture.
Prune to maintain a single central leader when the tree is young.
Allow plenty of space for its mature size.

Don't

Don't plant too close to structures or utility lines.
Avoid piling mulch against the trunk, which can cause rot.
Don't prune heavily in late winter or early spring.
Avoid excessive high-nitrogen fertilization.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Pest Check
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Durable and fast-growing shade treeUniform street or boulevard treeVibrant fall color specimen for large yards

Companion Plants

Turfgrass Hosta 'Sum and Substance'Geranium macrorrhizum Viburnum dentatum Amelanchier canadensis

Multiply

Propagation Methods

Good to Know

Common Questions

Sienna Glen Maple questions

What zones can Sienna Glen Maple grow in?

Sienna Glen 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 Sienna Glen Maple deer resistant?

Yes — Sienna Glen Maple is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Sienna Glen Maple bloom?

Sienna Glen Maple typically blooms in early spring through early spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Sienna Glen Maple need full sun?

Sienna Glen Maple does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Sienna Glen Maple drought tolerant?

Yes — once established (usually after the first full season), Sienna Glen Maple handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.