Rocky mountain maple (Acer glabrum)
Also known as: Greene's Maple, Torrey Maple, Dwarf Maple
The Rocky Mountain maple (Acer glabrum) is a small deciduous tree native to the western regions of North America, particularly prevalent in the Rocky Mountains. Its leaves turn a striking crimson color in the fall. With deep roots, this tree is excellent for controlling erosion. It typically grows along streams and other moist environments.
In This Article
Attributes of Rocky mountain maple
Lifespan
Perennial
Plant Type
Tree
Plant Height
3.5 m to 12 m
Spread
6 m to 9 m
Leaf Color
Green Yellow Red Gold Orange
Flower Size
2.5 cm
Flower Color
Green Yellow
Images of Rocky mountain maple
Quickly Identify Rocky mountain maple
1
Smooth, hairless bark on trunk and stems distinguish it from other species.
2
Distinctive red winged samaras, measuring 1 inch (2.5 cm), facilitate wind dispersal.
3
Leaves with 3-5 pointed lobes, glossy surface, and serrated edges.
4
Slender stem with red hue and sparse branching pattern in colder months.
5
Medium-sized shrub or tree, reaching 10-20 feet (3-6 meters) in height.
Scientific Classification of Rocky mountain maple
Phylum
Vascular plants
Class
Dicotyledons
Order
Sapindales
Family
Soapberry
Genus
Maples
Species
Rocky mountain maple
Planting and Growing of Rocky mountain maple
Care Difficulty
Easy
Watering Schedule
Every 3 days
Sunlight Requirements
Full sun
Sunshine Duration
6-12 hours
Ideal Temperature
50-77℉
Soil Type
Potting Mix, Peat Mix
Soil pH
6.5-7.5
Fertilizer Type
Balanced
Pruning Season
Spring, Summer
Pruning Area
Leaves, Branches
Pruning Frequency
2 times a year
Repotting Season
Spring
Pot Type
Plastic, Ceramic
How to Water Rocky mountain maple?
The water amount should always ensure the soil is evenly moist but never waterlogged. Typically, for Acer glabrum, about 500 ml of water is ample to maintain healthy hydration levels without risking root rot.
What are the symptoms of an underwatered Rocky mountain maple?
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What should I do if my Rocky mountain maple is not getting enough water?
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What are the symptoms of an overwatered Rocky mountain maple?
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How to save an overwatered Rocky mountain maple?
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What Are the Sunlight Requirements for Rocky mountain maple?
Acer glabrum thrives in a light range of full to partial sun. Within this range, the plant can maximize its growth potential and develop lush foliage. Ensuring the right balance of light fosters optimal health, enabling the plant to flourish in diverse environmental conditions.
More About Sunlight Requirements Techniques→
What is the ideal lighting solution?
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How can we achieve ideal lighting?
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Why is ideal lighting beneficial?
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What Is the Ideal Temperature Range for Rocky mountain maple?
Acer glabrum thrives best when the temperature is kept within a range of 50°F to 77°F. These conditions mimic their natural habitat and provide the most suitable environment for optimal growth. Mild days and cool nights characterize this temperature range, facilitating consistent growth and health.
What Soil is Best for Rocky mountain maple?
Acer glabrum thrives in soils with excellent drainage capabilities. Well-drained soil prevents waterlogging, which can lead to root rot and other issues. Ensuring that excess water can escape is vital for the overall health and growth of the plant. This species benefits from soil that is rich in organic matter. Nutrient-rich soil provides the necessary sustenance for Acer glabrum to develop strong roots and vibrant foliage, ensuring its longevity and robust growth. Soils that retain moderate moisture without becoming soggy are ideal for Acer glabrum. This balance allows the plant to access the water it needs without risks of root diseases associated with over-saturation.
How to Fertilize Rocky mountain maple?
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. For liquid fertilizers, mix 5 ml per liter of water. For slow-release, 50 grams per square meter around the base is ideal. Always follow the manufacturer's recommendations for specific amounts to avoid nutrient burn.
How to Prune Rocky mountain maple?
Begin by identifying any dead, damaged, or diseased branches and remove them with clean, sharp pruning shears to improve the tree's health and aesthetics. Ensure cuts are made at a slight angle, just above a bud or branch junction, to promote better healing. Focus on creating an open canopy by removing any inward-growing branches. This facilitates better air circulation and light penetration, critical for reducing disease risk and promoting even growth. To manage the size of Acer glabrum, carefully cut back larger branches and trim the tips of longer branches. This will help maintain the tree's desired dimensions while ensuring it retains a pleasing, balanced appearance.
More About Pruning Techniques→
How to Propagate Rocky mountain maple plant?
1
Collect seeds from ripe Acer glabrum samaras in late autumn. Store them in a cool, dry place until you're ready to plant them in early spring, as this helps break dormancy and ensure successful germination.
2
Use pruning shears to cut 6-8 inch long sections of new growth. Ensure each cutting has a few nodes. Remove the leaves from the lower half of the cuttings to reduce water loss before rooting.
3
In early spring, plant seeds in pots filled with a well-draining potting mix. Cover them lightly with soil and keep them moist. Seeds require stratification, so consider a pre-treatment of cold exposure before planting.
How to Repot Rocky mountain maple plant?
1
Look for signs such as roots growing out of the drainage holes, a compacted root ball, or the plant showing signs of stunted growth. These are indicators that Acer glabrum needs a new pot and fresh soil to continue thriving.
2
Select a pot that's at least two inches larger in diameter than the current one, with ample drainage holes. This ensures the roots have room to grow and prevents waterlogging, which can lead to root rot, enhancing the plant's health and growth.
3
Opt for a well-draining, sandy loam mix. This type of soil mimics the plant's natural habitat, providing the right balance of moisture retention and aeration, essential for the healthy growth of Acer glabrum.
