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Quercus ellipsoidalis - E.J.Hill.

Common Name Northern Pin Oak
Family Fagaceae
USDA hardiness 4-6
Known Hazards None known
Habitats Dry to moist siliceous to argillaceous woods[43]. Prairies and sandy hills in dry soils[82]. The best specimens are found in rich well-drained soils, especially those containing clay[229].
Range Northern Central N. America - west and north of the Great Lakes.
Edibility Rating    (2 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care
Fully Hardy Moist Soil Semi-shade Full sun
Quercus ellipsoidalis Northern Pin Oak


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Quercus ellipsoidalis Northern Pin Oak

 

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Summary

Bloom Color: Brown. Main Bloom Time: Early spring, Late spring, Mid spring. Form: Pyramidal.


Physical Characteristics

 icon of manicon of lolypop
Quercus ellipsoidalis is a deciduous Tree growing to 20 m (65ft) by 13 m (42ft) at a medium rate.
It is hardy to zone (UK) 4 and is not frost tender. The species is monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and is pollinated by Wind.
Suitable for: medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil. The plant can tolerates strong winds but not maritime exposure.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

Woodland Garden Canopy;

Edible Uses

Edible Parts: Seed
Edible Uses: Coffee

Seed - cooked. It can be dried, ground into a powder and used as a thickening in stews etc or mixed with cereals for making bread. The seed, which is up to 2cm long[229], contains bitter tannins - these can be leached out by thoroughly washing the seed in running water though many minerals will also be lost. Either the whole seed can be used or the seed can be dried and ground it into a powder. It can take several days or even weeks to properly leach whole seeds, one method was to wrap them in a cloth bag and place them in a stream. Leaching the powder is quicker. A simple taste test can tell when the tannin has been leached. The traditional method of preparing the seed was to bury it in boggy ground overwinter. The germinating seed was dug up in the spring when it would have lost most of its astringency. The roasted seed is a coffee substitute[161, 177, 257].

Medicinal Uses

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Astringent  Emmenagogue

Any galls produced on the tree are strongly astringent and can be used in the treatment of haemorrhages, chronic diarrhoea, dysentery etc[4]. A decoction of the inner bark has been used to treat suppressed menses caused by cold[257].

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Other Uses

Repellent  Tannin  Wood

A mulch of the leaves repels slugs, grubs etc, though fresh leaves should not be used as these can inhibit plant growth[20]. Oak galls are excrescences that are sometimes produced in great numbers on the tree and are caused by the activity of the larvae of different insects. The insects live inside these galls, obtaining their nutrient therein. When the insect pupates and leaves, the gall can be used as a rich source of tannin, that can also be used as a dyestuff[4]. Wood - hard, heavy strong. It is cut occasionally for lumber, being used for flooring, furniture and interior finishes[229].

Special Uses

Cultivation details

Landscape Uses:Specimen, Street tree. Prefers a good deep fertile loam which can be on the stiff side[1, 11]. Lime tolerant[188]. Young plants tolerate reasonable levels of side shade[200]. Tolerates moderate exposure, surviving well but being somewhat stunted[200]. Prefers warmer summers than are usually experienced in Britain, trees often grow poorly in this country and fail to properly ripen their wood resulting in frost damage overwinter[200]. A moderately fast-growing tree in the wild[229]. Seed production is cyclic, with a year of high yields being followed by 2 - 3 years of low yields[229]. The tree flowers on new growth produced in spring, the seed taking two summers to ripen[229]. Hybridizes in the wild with Q. velutina[43]. Intolerant of root disturbance, trees should be planted in their permanent positions whilst young[11]. Hybridizes freely with other members of the genus[200]. Plants in this genus are notably resistant to honey fungus[200]. Special Features:North American native, Inconspicuous flowers or blooms.

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Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

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Propagation

Seed - it quickly loses viability if it is allowed to dry out. It can be stored moist and cool overwinter but is best sown as soon as it is ripe in an outdoor seed bed, though it must be protected from mice, squirrels etc. Small quantities of seed can be sown in deep pots in a cold frame. Plants produce a deep taproot and need to be planted out into their permanent positions as soon as possible, in fact seed sown in situ will produce the best trees[11]. Trees should not be left in a nursery bed for more than 2 growing seasons without being moved or they will transplant very badly.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

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Author

E.J.Hill.

Botanical References

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Readers comment

   Fri Dec 2 2005

Dear Sirs, On the 24th. November 2005 we were pleased to plant this tree in the Allied Special Forces Memorial Grove which is situated within the National Memorial Arboretum, Alrewas, Staffordshire. This tree is part of the Combined Operations Memorial currently being created. Many thanks. Mike Colton, Secretary Allied Special Forces Association Office 11, Cattle Market, Hereford HR4 9HX 01432-357666 postroom@alliedspecialforces.org www.alliedspecialforcesassociation.org

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Subject : Quercus ellipsoidalis  
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