Mountain Maple

acer spicatum

The Mountain Maple (Acer spicatum) is a hardy, deciduous large shrub or small tree native to the cool, moist forests of northeastern North America. Thriving in the shade of dominant canopy trees like birches and hemlocks, it plays a vital ecological role by stabilizing rocky slopes and providing nutritious browse for forest wildlife. This species is particularly distinguished from other maples by its upright flower spikes and brilliant autumn display, where its foliage transitions into vibrant shades of yellow, orange, and red. Often growing in multi-stemmed clumps, it is a key understory component of northern hardwood and boreal transition forests, adapting well to acidic and nutrient-poor soils. Its resilient root system helps prevent erosion on steep terrains, making it a unsung hero of mountainous ecosystems. Its wood, though small, is tough, and its leaves provide critical microhabitats for various canopy-dwelling insects.

Habitat: Found in cool, moist understories of coniferous and mixed hardwood forests, particularly on rocky slopes, ravines, talus banks, and along streams.

Appearance

Mountain Maple is a multi-stemmed shrub or small tree growing up to 3 to 8 meters tall. Its leaves are opposite, 3-lobed (occasionally with two small basal lobes), and coarsely, unevenly serrated with a wrinkled texture. In early summer, it produces distinctive, upright, spike-like clusters of tiny yellowish-green flowers that point upward, unlike the drooping clusters of most other maples. These flowers develop into paired, winged samaras that turn reddish in mid-summer before drying to a light brown. The bark is thin, smooth, and reddish-brown to grayish, sometimes becoming slightly furrowed or scaly on older stems.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderSapindalesFamilySapindaceaeGenusAcer

Mountain Maple

Interesting facts

Indigenous peoples traditionally brewed a decoction of the bark to treat eye irritation and soreness.

The specific epithet 'spicatum' translates to 'spiked,' which perfectly describes its unusual upright flower panicles.

While most maples release their seeds in spring or early summer, Mountain Maple seeds mature in late summer and can remain on the branches throughout winter, feeding hungry birds.

Special abilities

Unlike most maples, it produces erect flower spikes that stand above the foliage, optimizing visibility and access for insect pollinators in dense understories.

It rapidly regenerates by sending up vigorous new shoots from the root crown or trunk after mechanical damage, browsing, or fire.

Its leaves are highly efficient at capturing low-intensity light, allowing it to grow and photosynthesize effectively beneath a closed forest canopy.

Measurements & details

Length: 300-800 cm
Lifespan: 30-60 years

Diet & Feeding

As a photoautotrophic plant, the Mountain Maple generates its own energy through photosynthesis, utilizing sunlight, carbon dioxide, water, and essential soil minerals.

Primary Foods

Sunlight
Water
Carbon dioxide
Soil minerals

Ecological connections

eaten by

Moose

Alces alces

Moose rely heavily on Mountain Maple twigs and bark as a critical winter food source.

eaten by

North American Beaver

Castor canadensis

Beavers use the stems for building dams and eat the nutrient-rich inner bark.

eaten by

Ruffed Grouse

Bonasa umbellus

Ruffed Grouse feed on the winter buds and seeds of this maple.

Traits

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Also known as

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Mountain Maple?

The easiest way to identify Mountain Maple is to use the Snappit nature identifier app.

How long is Mountain Maple?

300-800 cm

How long does Mountain Maple live?

30-60 years

What does Mountain Maple eat?

As a photoautotrophic plant, the Mountain Maple generates its own energy through photosynthesis, utilizing sunlight, carbon dioxide, water, and essential soil minerals.

Where is Mountain Maple usually found?

Found in cool, moist understories of coniferous and mixed hardwood forests, particularly on rocky slopes, ravines, talus banks, and along streams.