Armstrong Canadian Maple – Acer Rubrum Armstrong


Acer rubrum ‘Armstrong’ is a distinct cultivar of the Red Maple family, known for its slender, columnar shape.

Acer rubrum ‘Armstrong’ is a unique cultivar of the Red Maple family, celebrated for its distinctive columnar shape. Unlike many other maple trees, ‘Armstrong’ features an upright, narrow form, making it an excellent choice for landscapes with limited space or where vertical accents are desired.
One notable characteristic of Acer rubrum ‘Armstrong’ is its slender, columnar growth habit. It typically reaches heights of 40 to 50 feet (12 to 15 meters) with a spread of only 10 to 15 feet (3 to 4.5 meters), making it a compact and space-saving option for gardens and urban settings.
With its attractive form, ‘Armstrong’ adds vertical interest and elegance to landscapes. It showcases vibrant green foliage in spring and summer, transitioning to brilliant shades of red, orange, or yellow in theautumn. This stunning autumn display makes it a popular choice for those seeking vibrant seasonal colours.
Caring for Acer rubrum ‘Armstrong’ is relatively straightforward. It thrives in well-drained soil and prefers full sun to partial shade. Regular watering during the establishment phase is important, and once established, it has moderate drought tolerance. Pruning should be done in late winter or early spring to maintain its compact shape and remove any dead or crossing branches.
With its unique columnar form, vibrant foliage, and adaptability to various growing conditions, Acer rubrum ‘Armstrong’ is an excellent choice for adding vertical accents, creating privacy screens, or enhancing smaller garden spaces. Its beauty, ease of care, and space-saving qualities make it a valuable addition to any landscape design.

1. Style

Full Standard, Half Standard, Boxhead, Espalier, Feathered, Mini Standard, Multistem, Pleached, Umbrella


15-30cm, 30-50cm, 50-70cm, 70-90cm, 90-110cm, 110-130cm, 130-150cm, 150-170cm, 170-200cm, 200-230cm, 230-250cm, 250-270cm, 270-300cm, 300-350cm, 350-400cm, 400-450cm, 450-500cm, 500-600cm, 600-700cm, 700-800cm, 800-900cm, 900-1000cm

Stem Girth

4-6cm, 6-8cm, 8-10cm, 10-12cm, 12-14cm, 14-16cm, 16-18cm, 18-20cm, 20-22cm, 22-24cm, 24-26cm, 26-28cm, 28-30cm, 30-35cm, 35-40cm, 40-45cm, 45-50cm, 50-55cm, 55-60cm, N/A

Root Type

Pot Grown, Rootball, Bare Root

Foliage Type



Non Native

Growth Height

Medium Growing

Growth Speed

Fast Growth






No Berries


Without Thornes


Mildly Toxic

Drought Tolerance


Sun Preference

Full Sun, Partial Shade

Colourful Foliage


Leaf Size


Natural Growth Style




Hard Wood Cutback?


Soil Type?

Clay-Heavy, Sandy-Well Draining, Grows in most soil types

Natural Shape



Use any of the codes below at checkout to save on your plants.

Use Code: LARGE5 to get 5% off when you spend £500.

Use Code: LARGE7.5 to get 7.5% off when you spend £1000.

Use Code: LARGE10 to get 10% off when you spend £2000.

Use Code: LARGE15 to get 15% off when you spend £5000.


Box/Parcel – Used for plants sized 0-70cm.

Pallet – Used for plants sized 71-230cm.

Private Van/Lorry – Used for plants sized 231cm and taller.

In all cases you can request a private van delivery, where your plants are delivered by us. Upon your request we can re-evaluate your delivery fee and let you know of the delivery time.

Please note, for pallet and box deliveries we use third party companies to deliver the goods. Not often, but occasionally some delays may happen due to unforeseen circumstances, which are out of our control. For this reason, we ask you to never book gardeners, contractors, or other industry professionals for the estimated delivery date. Please do not book days off work or cancel other commitments specifically for your plant delivery to avoid disappointment.

Not home? No problem!

If you are not home at the time of your delivery, don’t worry! With your permission, we will instruct our trusted couriers to leave your plants in a safe place. If you have any requirements, or a preferred safe place for your plant delivery, please ensure to leave us a note along with your order, or simply give us a call.

Specialized Delivery

If you have any special requirements regarding your delivery, please add it to your order notes or call us on 01603 327269. Always include any delivery restrictions into your order note so appropriate vehicles and good carriers can be used to deliver your plants.

Please note that we currently are unable to deliver to Northern Ireland and The Republic of Ireland due to Brexit rules and regulations.

For more delivery information refer to our terms and conditions here.