Mountain Maple

Acer spicatum

Native to:
Canada, Labrador, Prince Edward I., United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Sapindaceae
Genus:
Acer
Species:
Acer spicatum
USDA Symbol:
ACSP2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
800 cm
Light Requirements:
Full Sun,Shade
Drought Tolerance:
Low
Bloom Months:
may,jun
Bloom Colors:
yellow, green
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Caterpillars:
★★☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

American Dagger Moth (Acronicta americana), Cecropia moth (Hyalophora cecropia), chalybeana leafroller moth (Acleris chalybeana), False Crocus Geometer (Xanthotype urticaria), fruit-tree leafroller (Archips argyrospila), Gypsy moth (Lymantria dispar), Io moth (Automeris io), Rosy Maple Moth (Dryocampa rubicunda), Saddled Prominent (Heterocampa guttivitta), Sparganothis acerivorana, woodland leafroller (Pandemis lamprosana), Zale galbanata

Reported Fauna Sightings

Moths:Maple leaf blotch miner (Cameraria aceriella), maple trumpet skeletonizer (Catastega aceriella)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals, browsers
Fall Color:
red, orange, yellow

Soil Requirements

Soil Type:
moist, rich, well-drained loamy soil
pH:
4.5 - 6.5 (acidic to slightly acidic)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers cool, shaded environments

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–120 days
Germination Time:
14–60 days
Notes:
Seeds should be sown fresh or stored cold-moist. Germination may be erratic and can extend over multiple seasons.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: Claude AI

ORGHPS Germination Guide: Expose to fluctuating outdoor winter temps incl. freezing for 3 months. Increase light/temp in spring. Requires soaking 24-48 hrs; discard floaters.

Source: Ontario Rock Garden & Hardy Plant Society