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Western mountain ash, Sorbus scopulina, is a medium sized erect shrub attaining hights not usually above 12 feet. Its new growth emerges sticky, Sor sco 2with whitish stemmed glands. The attractive foliage is a deep green color, leaves are alternate with between 9 and 13 narrow, fine-toothed, sharply acuminate leaflets 1 to 3 inches long. The large inflourescence consists of a many flowered 2 to 4 inch round-topped cluster, flowers are white with nearly rounded petals. This showy white inflourenscence gives way to a substantial cluster of small orange to red berries which emerge at the same time the leaves begin to fall in the Autumn. Sorbus scopulina grows throughout the western states with certain varieties being confined primarily to the west of the Cascade range crest. It grows in meadows, canyons, and along streamsides in open conifer forests at low to mid elevations. The fruit of the western mountain ash is edible although quite bitter until after the first frost. If so inclined, it is best to store the fruit in a cool dry place until almost, but not quite, spolied after which it can have a sweet tropical fruit flavor.
Info source: sevenoaksnativenursery.com
Genus - Sorbus
Species - Scopulina
Common name - Western Mountain Ash
Pre-Treatment - Required
Hardiness zones - 4 - 8
Height - 10-13' (3-4 m)
Spread - 10-13' (3-4 m)
Plant type - Shrub or small tree
Vegetation type - Deciduous
Exposure - Full Sun, Partial Sun, Partial Shade
Growth rate - Slow
Soil PH - Acidic, Neutral, Alkaline
Soil type - Sandy, loamy, clay
Water requirements - Average Water, well drained
Landscape uses - Woodland garden Sunny edges
Germination rate - 70%
Bloom season - May
Leaf / Flower color - Green / White
| Useful Info | |
| Germination | 1. Soak the seeds overnight in warm water. Mix the seeds with just a little bit moist vermiculite or moist sterile soil. Place the seeds in airtight plastic bag and store them in the refrigerator for at least two months. 2. Sow 1 mm deep in the soil and keep moist in bright and warm place till the germination. Or 2. Select a planting site for seeds outside in full sun, as they do not tolerate shade. This tree prefers fertile soil, but can tolerate poor soil. Mix sufficient peat moss into the soil to lower its pH to between 4.7 and 6.0. 3. Scatter the seeds thinly over the planting site in early fall or winter. Press the seeds lightly onto the soil without covering them. 4. Water the seeds with 1 to 2 inches of water per week, beginning after the last expected frost. The seedlings require consistently moist soil while growing, and the mature trees do not tolerate drought. Seedlings do not generally require special protection from insects or disease.(source: ehow.com) |
