Acer × freemanii 'Scarsen' SCARLET SENTINEL
Common Name: Freeman maple 
Type: Tree
Family: Sapindaceae
Zone: 3 to 8
Height: 40.00 to 45.00 feet
Spread: 20.00 to 25.00 feet
Bloom Time: April
Bloom Description: Greenish yellow
Sun: Full sun to part shade
Water: Medium to wet
Maintenance: Low
Suggested Use: Shade Tree, Street Tree, Rain Garden
Flower: Insignificant
Leaf: Good Fall
Tolerate: Wet Soil


Easily grown in average, medium to wet, well-drained soils in full sun to part shade. Prefers moist, acidic soils with good drainage. Established trees have some tolerance for drought conditions.

Noteworthy Characteristics

Acer × freemanii, commonly called Freeman maple, is a hybrid of red maple (A. rubrum) and silver maple (A. saccharinum). The Freeman maple cultivars commonly sold in commerce today reportedly combine some of the best features of both parents, namely, solid structure, attractive form and showy fall color (from red maple) and adaptability and rapid growth (from silver maple). Oliver M. Freeman of the National Arboretum made the first controlled crosses between red maple and silver maple in 1933. Edward Murray named this hybrid cross in 1969 in honor of Oliver M. Freeman. Notwithstanding the foregoing, crosses between red and silver maples occur not only by controlled propagation but also naturally in the wild. It is sometimes difficult to identify a Freeman hybrid because of the complexity of crosses and backcrosses that may occur.

Cultivars are sometimes listed for sale by nurseries under Acer rubrum instead of Acer × freemanii.

Genus name is the Latin name for a maple tree.

Specific epithet and common name honors Oliver Freeman who first grew A. × freemani at the U. S. National Arboretum in 1933.

‘Scarsen’, sold under the trade name of SCARLET SENTINEL, was patented in 1972. It is an upright, fast-growing, narrow-columnar deciduous tree with ascending branching. It typically matures over time to 40-45’ tall. Tree crowns somewhat broaden as trees become more oval in habit with age. Dark green leaves with dentate to serrate margins are deeply cut with five pointed lobes. Leaves typically turn yellow-orange or yellow-red in fall. Flowers are sparse. U.S. Plant Patent PP03,109 was issued on April 11, 1972.


No serious insect or disease problems. Young plants susceptible to leafhoppers and scale. Borers.


Specimen tree for the lawn, street or park.