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PlantFiles: Speckled Alder, Hazel Alder
Alnus incana subsp. rugosa

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Family: Betulaceae (beh-tyoo-LAY-see-ee) (Info)
Genus: Alnus (AL-nus) (Info)
Species: incana subsp. rugosa

Synonym:Alnus incana var. americana
Synonym:Alnus rugosa
Synonym:Alnus rugosa var. americana

2 vendors have this plant for sale.

Category:
Shrubs
Trees

Height:
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

Spacing:
12-15 ft. (3.6-4.7 m)

Hardiness:
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Deciduous

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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to view:

By greenthumb99
Thumbnail #1 of Alnus incana subsp. rugosa by greenthumb99

No details have been posted.

Regional...

This plant has been said to grow in the following regions:

Annapolis, Maryland



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