American Mountain Ash, Dogberry
Sorbus americana

Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Sorbus (sor-bus) (Info)
Species: americana (a-mer-ih-KAY-na) (Info)
Synonym:Pyrus americana
Synonym:Pyrus microcarpa

Category:

Trees

Height:

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)

20-30 ft. (6-9 m)

Spacing:

15-20 ft. (4.7-6 m)

Hardiness:

USDA Zone 2a: to -45.5 C (-50 F)

USDA Zone 2b: to -42.7 C (-45 F)

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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

Light Shade

Danger:

Unknown - Tell us

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Deciduous

Other details:

This plant is attractive to bees, butterflies and/or birds

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Non-patented

Propagation Methods:

From seed; direct sow after last frost

Seed Collecting:

Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds

Regional

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

Blair, Nebraska

West Kill, New York

Belfield, North Dakota

Grand Forks, North Dakota

Ada, Oklahoma

Portland, Oregon

Powell, Tennessee

Ten Mile, Tennessee

Kalama, Washington

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Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Jun 19, 2005, Joan from Belfield, ND (Zone 4a) wrote:

A gorgeous tree that adds interest from spring through fall. In the spring there's the white flowers, followed by the orange fruit, then the glorious fall leaf coloring.

Positive

On Jul 30, 2004, a5thbrat from Sebastopol, CA wrote:

Burbank was actively propagating these trees in experiments in the early 1900s. There remain at least 3 partial "orchard rows" of Sorbus at his Gold Ridge Farm in Sebastopol CA. These trees are estimated to have been planted sometime between 1890 and 1920 and still bear a abundance of fruit each year.

Note, Foliage: A good source of "fall color".

Interesting Note Regarding Ripening of Fruit:
The fruit of the Sorbus is only edible after being "bletted", in other words, after falling to ground and fermenting.

The flesh then has a custard-like consistency and people describe it alternately as tasting like both vanilla and chocolate pudding.