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ACER macrophyllum
Commonly known as Big leaf maple, Oregon maple
Large dark green deeply lobed leaves which turn a bright orange in autumn. Fragrant yellow flowers in clusters followed by bristly fruit
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Deciduous - broadly ovate, deeply 5-lobed, glossy leaves 20-30cm (8-12in) long
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Yellow - yellow-green -
Height - 20m (65ft) -
Spread - 20m (65ft)
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Tree - vigorous. Produces large, bristly, winged fruit
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Very hardy - Hardy in the severest continental climates including exposed upland locations in the UK. Plant can withstand temperatures < -20 (-4°F) -
Full sun -
Partial shade -
Additional Features - Good to know - - the largest leaves of any maple -
Pests & Diseases - aphids, mites (causing galls), caterpillars, Verticillium wilt, leaf scorch, honey fungus -
Place of origin - western North America -
Flower Shape - Racemes - - pendent racemes 10-15cm (4-6in) long
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Garden Location/Conditions - Woodland garden -
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Hardiness - Fully hardy -
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Leaf margin - Lobed - see photos above -
Leaf shape - Ovate - see photos above
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Pruning group - Pruning group 1
Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
RHS group 1 -
Seasonal Interest - Autumn -
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Spring
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Soil Conditions - Fertile moist well-drained soil -
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Tree Shape - Rounded to broadly spreading -
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20m (65ft)
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20m (65ft) |
Useful extras...
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50
Vermin & Pest Control
Tree Guards
Essential small tree protection from vermin and strimming. This pack includes 5 x 90cm canes and 5 x 90cm spiral guards. Includes instructions.
Only £5.00
Garden Goodies
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen.
Just stick them in your pot or border. Pack of 6.
Only £10.20
Garden Goodies
Slate Tie-on Plant Labels
Hand made in Cornwall, these delightful natural slate labels are perfect for pots.
Comes with chalk pen. Pack of 5
Only £10.20
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