Showy Mountain Ash

Sorbusdecora

Family
Rosaceae (ro-ZAY-see-ee)
Genus
Sorbus (sor-bus)
Species
decora (DEK-or-uh)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Grown for foliage
Deciduous
Smooth
Height
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)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Mid Spring
Late Spring/Early Summer
Other Details
Category
Shrubs
Trees
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
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
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
By grafting
By budding
Seed Collecting
Allow unblemished fruit to ripen; clean and dry seeds
Regional

This plant is said to grow outdoors in the following regions:

Moscow, Idaho

Orono, Maine

Ely, Minnesota

Minneapolis, Minnesota

Spokane, Washington

Madison, Wisconsin

show all

Featured Videos

Gardener's Notes:

1
positive
1
neutral
0
negative
Sort By:
Sort By:
R
Downingtown, PA | July 2015 | neutral

A lovely small to medium sized ornamental tree, usually 20 to 25 feet high, but to 50 feet is possible. Its compound leaves have 11 to 15...Read More

D
Saskatoon, SK (Zone 3a) | May 2010 | positive

These trees earn their keep in a northern climate, and provide interest in all four seasons. The white flowers are very showy in spring,...Read More

Featured
Eucalyptus Leaf Beetle
(Paropsisterna obliterata)
Brown-headed Cowbird
(Molothrus ater)
Featured
Eucalyptus Leaf Beetle
(Paropsisterna obliterata)
Brown-headed Cowbird
(Molothrus ater)