Also known as California Mountain Maple · Douglas' Maple · Dwarf Maple
Rocky Mountain Maple (Acer glabrum) is a small deciduous tree or large shrub native to western North America, known for its adaptability and fall color.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
50% intensity
Prefers full sun but tolerates partial shade, especially in hotter climates. Protect young saplings from intense afternoon sun.
Moderate
50% intensity
Keep soil consistently moist, especially during establishment. Water deeply when topsoil is dry.
Well-drained
50% intensity
Cold Hardy
25% intensity
Thrives in temperate climates. Tolerant of cold winters and moderate summers.
Low
25% intensity
Rarely needs heavy feeding. A light application of balanced fertilizer in spring is usually enough.
Safety information from plant toxicity data
| Attribute | Value |
|---|
None reported
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Rocky Mountain Maple prefers consistent moisture, especially when young. Water deeply when the top 2-3 cm of soil feels dry.
Reduce watering frequency in cooler months or once established, but avoid prolonged drought, which can stress the tree. Ensure good drainage to prevent root rot.
Prune to maintain desired shape and remove dead, damaged, or crossing branches. The best time for major pruning is during the dormant season (late winter to early spring) before new growth begins.
Minor trimming can be done in summer to control size or shape if necessary.
Propagate Rocky Mountain Maple from seeds, which typically require a period of cold stratification. Alternatively, cuttings can be taken from softwood or semi-hardwood in late spring or summer.
Successful propagation requires patience and appropriate rooting hormone treatments.
Young plants may benefit from repotting every 2-3 years to refresh soil and provide more space for root growth. Mature trees are best left undisturbed.
Repot in early spring before new growth emerges, using a well-draining potting mix. Avoid repotting stressed plants.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Rocky Mountain Maple (Acer glabrum)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Sapindales |
| Family | Sapindaceae |
| Genus | Acer |
| Species | Acer glabrum |
Similar in genus Acer
Answers based on plant encyclopedia data
