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mountain maple

Acer spicatum · Aceraceae

mountain maple (Acer spicatum)
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mountain maple (Acer spicatum) is a perennial tree in the Aceraceae family. It is native to North America. USDA records it as hardy in zone 2 and warmer, down to about -47°F.

At a glance

Typetree Derived
Lifecycleperennial USDA
Native statusnative USDA
Mature height25 ft USDA
Lightshade USDA
Water needmedium USDA
Growth ratemoderate USDA
Soil pH4.8–7 USDA
BloomMarch–May USDA
Flower colorYellow USDA
Hardiness zones2 and warmer USDA
Guild layerunderstory Derived
Nursery availabilityNo Known Source USDA

USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.

Growing conditions

It tolerates full shade. USDA rates it as having moderate water needs. Its drought tolerance is rated low. It is recorded on soils from pH 4.8 to 7 — a broad range that spans acidic through mildly alkaline ground. Its cold limit is zone 2.

Size and growth

At maturity it reaches about 25 ft, making it a substantial woody plant. It grows at a moderate rate.

Bloom period

USDA records a bloom period of March through May. Flowers are yellow.

A flowering date, not a pollinator rating.

Foliage, flower and season

Summer foliage is green, coarse in texture. Its flowers are not conspicuous — a plant for form and foliage. It carries conspicuous autumn colour. Its active growth period is spring and summer. USDA rates its lifespan as moderate.

What the site needs to provide

USDA records it across sites receiving 30 to 70 inches of annual precipitation. It needs at least 100 frost-free days to finish its season. It roots to at least 32 inches. Fertility requirement: medium.

Propagating it

Propagate it from seed, bare root and container stock. Seed needs cold stratification — a period of moist chilling — before it will germinate, so sow in autumn or chill it artificially before a spring sowing. Its seed spreads at a moderate rate. It does not spread vegetatively, so it will stay where you put it.

Resilience and wildlife

Browsing animals find it moderately palatable, so expect deer and rabbits to take an interest. Its fire tolerance is rated high, and it can resprout after damage. Its growth form is recorded as multiple stem.

Role in a guild

Understory. In a layered planting this is the layer beneath the canopy, tall enough to hold structure but shaded from above. The layer is derived by a fixed rule from growth habit and mature height.

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Tags

deciduousnativeshade-tolerant

Related plants

Others in Acer

Similar role and hardiness

Where this data comes from

Every value on this page comes from the USDA PLANTS database record for symbol ACSP2, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.

Read our full data sources and methodology.

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