Quercus ellipsoidalis
northern pin oak
A large, spreading tree to 30m tall with ascending upper branches and lower branches that descend towards the ground. The deeply-lobed, glossy green leaves on slender stalks are 7-13cm long and turn a deep crimson-purple in the autumn. Insignificant yellowish-green flowers in catkins are followed by elliptic acorns with saucer-shaped cups
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Size
Ultimate height
Higher than 12 metresTime to ultimate height
more than 50 yearsUltimate spread
Wider than 8 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Yellow | Green | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Purple Red | Brown | ||
| Winter | Brown |
Position
- Full sun
Aspect
East–facing or South–facing or North–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Fagaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Potentially harmful
- Pets (dogs): Harmful if eaten - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
- Genus
Quercus can be deciduous or evergreen trees or shrubs, with entire, lobed or toothed leaves; flowers inconspicuous, followed by characteristic acorns; sometimes good autumn colour
- Name status
Correct
- Plant range
- NE US
How to grow
Cultivation
Grow in deep, fertile, well-drained soil
Propagation
Propagate by grafting in mid-autumn or early winter
Suggested planting locations and garden types
- Cottage and informal garden
- Low Maintenance
Pruning
Pests
May be susceptible to oak processionary moth, aphids, caterpillars, leaf-mining moths and oak gall wasps
Diseases
May be susceptible to powdery mildews and honey fungus
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