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Alnus rhombifolia - Nutt.
                 
Common Name White Alder
Family Betulaceae
USDA hardiness 8-11
Known Hazards The freshly harvested inner bark is emetic but is alright once it has been dried[172].
Habitats Usually found in rocky or gravelly soils along the sides of streams, in canyon bottomlands and gulches, from near sea level to 2400 metres[60, 229].
Range Western N. America - British Columbia to California.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Wet Soil Semi-shade Full sun

Summary
Bloom Color: Yellow. Main Bloom Time: Early spring, Late spring, Mid spring. Form: Oval, Pyramidal.

Alnus rhombifolia White Alder


Alnus rhombifolia White Alder
http://www.flickr.com/photos/62614925@N00/2330207410
   
Physical Characteristics
 icon of manicon of lolypop
Alnus rhombifolia is a deciduous Tree growing to 12 m (39ft 4in) at a fast rate.
It is hardy to zone (UK) 7. It is in flower in March, and the seeds ripen from Oct to January. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind.It can fix Nitrogen.
Suitable for: medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist or wet soil. The plant can tolerates strong winds but not maritime exposure.

Synonyms

Habitats
Woodland Garden Canopy; Bog Garden;
Edible Uses
Edible Parts: Flowers;  Inner bark.
Edible Uses:

Catkins - raw or cooked. A bitter flavour[172]. Inner bark[257]. No more information is given, but inner bark is often dried and can be used as a flavouring in soups or can be mixed with cereal flours when making bread etc[K].
Medicinal Uses


Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Astringent;  Birthing aid;  Diaphoretic;  Emetic;  Haemostatic;  Skin;  Stomachic;  TB;  
Tonic.

The bark is astringent, diaphoretic, emetic, haemostatic, stomachic and tonic[172, 257]. A decoction of the dried bark is used in the treatment of diarrhoea, haemorrhages in consumption, stomach aches and to facilitate child birth[257]. Externally it can be used as a wash for babies with skin diseases, nappy rash etc[257]. A poultice of the wood is applied to burns[257].
Other Uses
Baby care;  Basketry;  Dye;  Fuel;  Tannin;  Wood.

The bark and the strobils are a source of tannin[82]. The roots have been used to make baskets[257]. The inner bark can be dried, ground into a powder then mixed with flour and water for use as a dye[257]. The colour is not specified[257]. The fresh bark can be chewed and used as a red dye[257]. Wood - light, soft, not strong, brittle, close and straight-grained, very durable in water[82]. It is of limited value as a low-grade lumber, but is used principally for fuel[229].
Cultivation details
Landscape Uses:Massing, Woodland garden. Prefers a heavy soil and a damp situation[1, 11]. Grows well in heavy clay soils[11]. Tolerates very infertile sites[200]. A fairly fast-growing but short-lived species, reaching its maximum size in 50 - 60 years[229]. This species has a symbiotic relationship with certain soil micro-organisms, these form nodules on the roots of the plants and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[200]. Special Features:North American native, Wetlands plant, Inconspicuous flowers or blooms.
Propagation
Seed - best sown in a cold frame as soon as it is ripe and only just covered[200]. Spring sown seed should also germinate successfully so long as it is not covered[200, K]. The seed should germinate in the spring as the weather warms up. When large enough to handle, prick the seedlings out into individual pots. If growth is sufficient, it is possible to plant them out into their permanent positions in the summer, otherwise keep them in pots outdoors and plant them out in the spring. If you have sufficient quantity of seed, it can be sown thinly in an outdoor seed bed in the spring[78]. The seedlings can either be planted out into their permanent positions in the autumn/winter, or they can be allowed to grow on in the seed bed for a further season before planting them. Cuttings of mature wood, taken as soon as the leaves fall in autumn, outdoors in sandy soil.

Books by Plants For A Future

Other Names
Found In
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 :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Alnus cordataItalian Alder00
Alnus glutinosaAlder, European alder , Common Alder, Black Alder03
Alnus hirsuta 00
Alnus incanaGrey Alder, Speckled alder, Thinleaf alder, White Alder00
Alnus japonicaJapanese Alder01
Alnus maritimaSeaside Alder, Beach Alder00
Alnus maximowiczii 00
Alnus nepalensisNepalese Alder01
Alnus nitida 01
Alnus rubraRed Alder, Oregon Alder22
Alnus rugosaSpeckled Alder02
Alnus serrulataSmooth Alder, Hazel alder02
Alnus sinuataSitka Alder11
Alnus tenuifoliaMountain Alder, Thinleaf alder12
Alnus viridis crispaAmerican Green Alder12
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Subject : Alnus rhombifolia  

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