Alnus — 20 species
Botanical species in the genus Alnus recorded in the PlantPeers database.
Alnus acuminata
Alnus acuminata
Family: Betulaceae
Cultivation
Alnus acuminata is a plant of higher elevations in the tropics, where it is generally found at elevations from 1,000 - 3,700 metres. It grows best in areas where annual daytime temperatures are within the range 15 - 28°c, though it can tolerate 4 - 34°c. Plants can withstand temperatures that dip briefly below 0°c.
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Alnus alnobetula
Alnus alnobetula
Family: Betulaceae
Cultivation
Grows best in a sunny position. Prefers a heavy soil and a damp situation. Grows well in heavy clay soils.
Full cultivation guide →Alnus cordata
Alnus cordata
Family: Betulaceae
Cultivation
Alnus cordata is native to the warm temperate region of southern Italy, but also grows well in cooler regions of the temperate zone. It requires a mean annual rainfall of 1,000mm or more for it to thrive. Prefers a sunny position in a moist, fertile soil.
Full cultivation guide →Alnus cremastogyne
Alnus cremastogyne
Family: Betulaceae
Cultivation
Requires a sunny position. Prefers a heavy soil and a damp situation. Grows well in heavy clay soils.
Full cultivation guide →Alnus firma
Alnus firma
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus formosana
Alnus formosana
Family: Betulaceae
Cultivation
Alnus formosana is a plant of subtropical areas in Taiwan, where it can be found at elevations up to 2,900 metres. It should succeed outdoors at least in the milder regions of the temperate zone. Prefers a heavy soil and a damp situation.
Full cultivation guide →Alnus glutinosa
Alnus glutinosa
Family: Betulaceae
Cultivation
Alnus glutinosa favours a moderate to cold climate and prefers damp or wet soils. It is estimated to tolerate an annual precipitation of 400 - 2,000mm, an annual average temperature of 8 - 14°c. Prefers a heavy soil and a damp situation, tolerating prolonged submergence of its roots and periods with standing water to 30cm deep.
Full cultivation guide →Alnus hirsuta
Alnus hirsuta
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus incana
Alnus incana
Family: Betulaceae
Cultivation
Alnus incana is a very cold-tolerant species, able to grow up to the treeline. Grows best in a sunny position. Tolerant of a wide range of soils, though it prefers a heavy soil and a damp situation.
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Alnus japonica
Alnus japonica
Family: Betulaceae
Cultivation
Alnus japonica is a plant mainly of temperate regions where it can experience very cold winters. It does also extend south to Taiwan where it enjoys a subtropical climate and is also cultivated in the Philippines, usually at higher elevations. Grows best in a sunny position, but is shade tolerant.
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Alnus jorullensis
Alnus jorullensis
Family: Betulaceae
Cultivation
Alnus jorullensis is a plant of tropical montane forests, where temperatures are cool, with abundant rainfall. They are also found in high-elevation, open, oak-pine and fir woodlands in Mexico. Grows best in a sunny position, but is somewhat shade tolerant.
Full cultivation guide →Alnus maritima
Alnus maritima
Family: Betulaceae
Cultivation
Alnus maritima is reported to tolerate an annual precipitation in the range of 950 - 4,00omm, an average annual temperature in the range of 13. 5 - 18°. Prefers a heavy soil and a damp situation, but it succeeds in ordinary garden soil.
Full cultivation guide →Alnus maximowiczii
Alnus maximowiczii
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
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Alnus nepalensis
Alnus nepalensis
Family: Betulaceae
Cultivation
Alnus nepalensis is a plant of the warm temperate to subtropical zones, it can also be grown at higher elevations in tropical areas with high rainfall. It grows best in areas with a mean annual rainfall ranging from 500 - 2,500mm, and an annual average temperature in the range of 19 - 23°c. Mature trees tolerate some frost.
Full cultivation guide →Alnus nitida
Alnus nitida
Family: Betulaceae
Cultivation
Trees probably tolerate temperatures down to between -5 and -10°c and so will not succeed outdoors in the colder areas of the temperate zone. Prefers a heavy soil and a damp situation. Grows well in heavy clay soils.
Full cultivation guide →Alnus pendula
Alnus pendula
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus rhombifolia
Alnus rhombifolia
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus rubra
Alnus rubra
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus serrulata
Alnus serrulata
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →Alnus subcordata
Alnus subcordata
Family: Betulaceae
Cultivation
Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites.
Full cultivation guide →