The final size of both maples is about the same 47 feet tall and 35 wide. Sometimes it even has to be controlled by pruning. If conditions are ideal, the tree can even accelerate in growth. If the climate is moderate and the tree has enough moisture, the growth rate can accelerate to 2 feet per year.Īt the same time, Autumn Blaze Maple usually grows 2 feet per year. Red Sunset averages 1-1.5 feet of annual growth. While Red Sunset is most comfortable in zones 5-7. So Autumn Blaze is better suited for both north and south. In extreme heat, this maple can get leaf scorch.Įven in zone 8, Red Sunset sometimes has problems. You must shade the plant in the first years and water it regularly. You can often find recommendations that Red Sunset can be grown in the 9 USDA hardiness zone. The sun and heat of that climate do not interfere with the vigorous growth of this variety. The advantage of this variety is that it has strong branches that will not break even in heavy snowfall.Īs for the south, both maples can be grown in zone 8. Red Sunset should be grown in zone 4 further north, it can be damaged by frost. Besides, its better frost tolerance makes it suitable for growing in parts of Canada. residents live in this climate, but still. This variety is recommended for planting in zone 3. Autumn Blaze hardierĪutumn Blaze tolerates low temperatures better than the competition. In the fall, both trees turn a fiery red and this lasts until the leaves fall. In early spring the foliage is bright green. Autumn Blaze has a less dense canopy and some of the sun’s rays will penetrate through it.Īs for color, these maples are equal. Autumn Blaze has a slightly loose crown while Red Sunset has a thicker, more lush crown.Īnother consequence of this is that Red Sunset forms a denser canopy, so there will be deep shade underneath. Whereas Autumn Blaze leaves are half that size, measuring 3 inches across.įrom this comes a slightly different appearance of these varieties. Red Sunset has a leaf 6 inches wide and the same length. It usually has 3 or 5 lobes, the depth of cuts may vary slightly. The leaf shape of both maples is very similar. Red Sunset Maple and Autumn Blaze Maple Red Sunset has bigger leaves
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