Carya aquatica
Water hickory Ht 20-30m
S.E.USA and Mississippi Valley. Broadly columnar, deciduous. Tolerates wet sites and flooding, with best growth on moist drained soils. Nuts bitter, but eaten by pigs. Yellow autumn colour.l
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Tolerates wet sites
- Attractive autumn colours - yellow
Betula utilis
Yunnan birch Ht 10-15m
Nepal and eastward into China. Broadly conical, deciduous. Shiny polished reddish brown trunk, large leaves yellow in autumn, 10-14 pairs of impressed veins, ascending branches, later a domed crown.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
Betula platyphylla v. japonica
Japanese white birch Ht 15-25m
Narrowly weeping, deciduous. Bark pure white and retained to ground level longer than B. pendula. Leaves larger than B. pendula. Not affected by rust and has bright yellow autumn colour. Highly recommended.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
- Timber
- Firewood
- Erosion control
- Shelter
Betula pendula f. tristis
Silver birch with narrow form Ht 10-20m
Long weeping branches. The bark remains white to the ground longer than the usual form. Tough vigorous pioneering species. Yellow autumn colour can be spoilt by birch rust in some seasons. Yields a hard white timber.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
- Firewood
- Erosion control
- Shelter
Betula pendula
Silver birch Ht 10-20m
Europe and N. Asia. Narrowly weeping, deciduous. Bark white, developing dark, rugged cracks at the base with age. Tough, vigorous pioneer species. Yellow autumn colour can be spoilt by birch rust in some seasons. Yields hard white timber.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
- Timber
- Firewood
- Erosion control
- Shelter
Betula papyrifera
Paper birch Ht 20-30m
Northern North America. Broadly conical, deciduous. Bark white, peeling in thin layers, pale pinkish-orange when freshly exposed. Leaves relatively large, bright yellow in autumn. Yields hard white timber.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
- Timber
- Firewood
- Erosion control
- Shelter
Betula ermanii
Erman's or Gold birch Ht 15-20m
Broadly conical, deciduous. Pure white to pinkish white bark, peeling in thin rolls. Dark green leaves, golden in autumn. Long drooping male catkins in spring. A lovely rust free birch, very vigorous, highly recommended. Suitable for firewood.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Attractive autumn colours - yellow
- Attractive flowers or catkins
- Firewood
Alnus x spaethii
Hybrid alder (A.japonica x A.subcordata) Ht 20-25m
Narrowly conical at Eastwoodhill Arboretum, deciduous, leaves similar to A .subcordata. Smaller growing, neat shelter tree.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Tolerates wet sites
- Attractive flowers or catkins
Alnus glutinosa
European or black alder Ht 20-25m
Broadly conical, deciduous. Vigorous growth and good form. Habitat beside rivers and will grow in very wet places. Tolerates salt winds better than the other alders. Good firewood crop to utilise wet ground. Timber durable under water.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Resistant to salt spray
- Tolerates wet sites
- Tolerates exposed sites
- Attractive flowers or catkins
- Timber
- Firewood
- Erosion control
- Shelter
Alnus cremastogyne
Upright evergreen alder Ht 25-30m
Narrow crown, shading is minimal with good grass growth. Deep roots fix nitrogen and hold the soil. Grows well on dry Gisborne and Nelson hillsides, deciduous for 6 weeks. Cold hardiness not tested further south.
Group trees and shrubs:
Yes
Categories:
- Medium tree
- Deciduous
- Tolerates wet sites
- Tolerates dry sites
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