Western Mountain Ash, Greene's mountain ash, Cascade mountain ash

Sorbus scopulina

Physical Characteristics

Sorbus scopulina is a deciduous Shrub growing to 4 m (13ft) by 4 m (13ft). See above for USDA hardiness. It is hardy to UK zone 5. It is in flower in May, and the seeds ripen in October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil. The plant can tolerates strong winds but not maritime exposure.

Distribution

N. America - Labrador to Alaska, south to Maine, Pennsylvania, Michigan, Colorado and Utah.

Habitats

Woodland Garden Sunny Edge;

Edible Uses

Edible Parts: Fruit Edible Uses: Fruit - raw, cooked in pies, preserves etc, or dried for later use[62, 101, 183]. A bitter flavour[212]. The fruit becomes sweeter and so tastes best after a frost, it can also be bletted if it is going to be eaten raw[K]. This involves storing the fruit in a cool dry place until it is almost but not quite going rotten. At this stage the fruit of many species has a delicious taste, somewhat like a luscious tropical fruit. The fruit is up to 5mm across[200].

Medicinal Uses

Enuresis Febrifuge Tonic An infusion of the branches has been given to young children with bed-wetting problems[257]. The bark is febrifuge and tonic[257]. It has been used in the treatment of general sickness[257].

Known Hazards

The seeds probably contain hydrogen cyanide. This is the ingredient that gives almonds their characteristic flavour. Unless the seed is very bitter it should be perfectly safe in reasonable quantities. In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.