| General Description | There has been a lot of confusion with this tree when another upright maple was introduced called Monumentale. This cultivar of sugar maple grows very slowly and will grow 30 cm in most soils each year. The tree is sensitive to heat and drought, which will turn the leaves brown along the edges(leaf scorch). ‘Newton Sentry’ is a narrow tree with upright branches that grows to 20 m in height and 3-5 m in width. The tree has many leaders, and has to be maintained to keep its shape. It has green pale flowers in the spring and dark green leaves in the summer, which turn a reddish orange colour in the autumn. |
| ID Characteristic | The tree has an opposite leaf arrangement, with the leaf being a simple leaf with palmate venation. The branches grow upright and don’t droop at all, but will need pruning to help structure of the tree. The tree has long upright branches and has many leaders, which can promote a slightly dishevelled appearance. |
| Landscape | Used for wind breaks, as a specimen or accent plant, allees and fence lines. Intolerant of road salt. |
| Cultivation | Grown in average to medium moisture, full sun to part shade and well-drained slightly acidic soil. In periods of drought watering is advisable. it is intolerant of compacted soils, road salt and urban pollution. |
| Pests | Aphids can infest maples, and when the infestation is bad enough it can cause leaves to drop. Honey dew is another sign of a heavy infestation. The tree is very sensitive to heat and drought, which will turn the leaves brown.along the edges. |
| Habitat | Horticultural origin. |
| Bark/Stem Description | The bark is brown and not showy, and branches grow upright. |
| Flower/Leaf Bud Description | The leaf and flower bud are dark brown, medium sized, shiny and found in groups of two. |
| Leaf Description | The leaf arrangement is opposite with a simple leaf, palm- shaped, with palmate venation. It is dark green in the summer and reddish orange in the autumn. |
| Flower Description | The Flowers blooms in the spring, are small, are a pale green colour with little ornamental value. |
| Fruit Description | A two winged samara that is beige on maturity. |
| Colour Description |
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