 | Nutall Oak - Quercus nuttallii |
 Nuttall Oak |
This native North American deciduous tree is capable of reaching 30 to 37 meters (100 to 120 feet) feet but is more often seen at 18 to 25 meters (60 to 80 feet). The dull, dark green, lobed leaves are 10 - 20cm (4 - 8 inches) long and 5 - 13cm (2 - 5 five inches) wide. The small, reddish brown acorns are 1.9 - 3cm (0.75 to 1.25 inches) long. The bark is dark, grey/brown, and divided into broad, flat plates. |
Figure 1. Nuttall Oak Quercus nuttallii, Morton Arboretum acc. 417-45*4, from seed, is 64 years old. [2]
| Nuttall Oak should be grown in full sun on any soil and is very tolerant of poorly-drained, wet sites. This should make it well suited for the soil conditions found at many urban sites. If landscape nurseries grew this tree more often, it would be specified for poorly-drained urban and suburban landscape sites. Propagation is by seed. No pests or diseases of major concern. [1] |
An oak "hedgehog" gall on a white oak leaf. This growth is induced by a small cynipid gall wasp whose larvae develop inside.
Several insects attack oak trees. They are usually not important but may become epidemic and kill weakened trees. Economically, the most important are the wood borers. These may damage the wood of standing trees and cause log and lumber defects. White oak is attacked by several leaf eaters including the gypsy moth (Lymantria dispar), orange-striped oakworm (Anisota senatoria), variable oakleaf caterpillar (Heterocampa manteo), several oak leaf tiers and walking stick. The Cynipid wasps cause galls to develop on the leaves, in the acorn or on the cup.
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References
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