Woody > Acer > Acer saccharum > Acer saccharum 'Monumentale'
Acer saccharum
'Monumentale'
Monumentale Sugar Maple
Mike's
Opinion
"
I prefer it over 'Newton Sentry' for its more uniform shape and elliptical form. 'Newton Sentry' grows more vertically but appears messy at the top because of multiple leaders while 'Monumentale' is a tidy plant; its form combined with the yellow-orange autumn colour catches the eye.
Michael Pascoe, NDP., ODH., CLT., MSc. (Plant Conservation)
"
| Family |
| Sapindaceae (Aceraceae) |
| Genus |
| Acer |
| Species |
| saccharum |
| Cultivar |
| 'Monumentale' |
| Category |
| Woody |
| Type |
| Tree (deciduous) |
| Pronunciation |
| USDA Hardiness Zone |
| 3 |
| Canadian Hardiness Zone |
| 1 |
| RHS Hardiness Zone |
| H7 |
| Temperature (°C) |
| -40 - (-35) |
| Temperature (°F) |
| -40 - (-30) |
| Height |
| 19 m |
| Spread |
| 6 m |
Photographs
Description and Growing Information
Flowering Period
| General Description |
| Branches curve upwards giving A. saccharum 'Monumentale' a narrow growth form while other characteristics are very similar to the straight species. |
| Shape |
| Elliptical crown that is very narrow in shape. |
| Growth |
| Slow |
| ID Characteristic |
| Branches curve upwards giving it an elliptical shape while maintaining a central leader into the crown; it is unlike A. saccharum 'Newton Sentry' which rarely maintains a central leader past 1.8 m. Bark begins smooth but becomes profoundly furrowed as it ages. |
| Pests |
| Verticillium wilt can be a problem while the fungal disease Rhystima, can cause premature defoliation. |
| Bark/Stem Description |
| Grey-brown bark. New growth is glabrous, but with age becomes profoundly furrowed having very deep ridges. The bark can vary but new growth tends to always be smooth. |
| Flower/Leaf Bud Description |
| Football shaped with the terminal bud being twice the size of the axillary buds, glabrous but tomentose at the tip. |
| Leaf Description |
| Opposite, simple leaves with 3-5 lobes, cordate, acuminate with medium deep lobes and are dark green. Turn yellow-orange in autumn. The leaves are slightly alkaline reducing pH levels when they decompose. |
| Flower Description |
| Mid-April to May. Perfect, having 5 sepals, greenish yellow colour. Flowers 3-4 weeks before tree develops leaves. |
| Fruit Description |
| Samara, glabrous, 2-5 cm long, 'u' shaped, seed casing appears plump and more pronounced than other maple samara and ripen through September to October. |
| Colour Description |
| Dark green leaves that turn yellow-orange in autumn. Bark is a grey-brown but new growth tends to be a light grey. |
| Texture Description |
| A medium textured plant. |
| Notable Specimens |
| Whistling Gardens, Wilsonville, Ontario, Canada. |
| Propagation |
| Graft onto A. saccharum rootstock. |
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