Rubus spectabilis aka Salmonberry

Rubus spectabilis, or salmonberry, belongs to the rose family. This deciduous shrub comes from western North America. Its range runs from Alaska to northwestern California. It also reaches British Columbia and Idaho. It grows in damp woods, along streams, and on slopes. Upright or arching stems form dense thickets through spreading rhizomes. These patches can expand fast on disturbed ground.

Garden plants reach about 5–8 feet [1.5–2.5 metres] tall. Their spread reaches about 3–5 feet [1–1.5 metres]. Other accounts report heights of 3–12 feet [0.9–3.7 metres]. Young green stems bear prickles, chiefly near their tips. Older stems have thin orange bark that peels away. Winter stems can turn golden brown or rusty red. Leaves grow alternately and usually have three leaflets. Their edges have teeth and may also have lobes. The upper leaf surface can look shiny or wrinkled. Stems grow leaves in their first year. Side shoots bear flowers and fruit in the second year.

Pink to rose-purple flowers open from March to June. Each flower has five petals and a cup-like shape. Flowers may open before the leaves fully unfold. The fruits resemble raspberries and contain many small druplets. Their colours range from yellow and orange to red. Reports differ on their flavour and yield in Britain. Some find the berries bland, while others enjoy them. Cool summers may limit their flavour and crop. Eat the fruit fresh, cooked, or dried. It also suits jam and jelly. Young shoots and young leaves are edible too. PFAF lists no known hazards for this species.

Salmonberry grows in sun or shade, including deep shade. RHS recommends moist soil that drains well and a sheltered site. It accepts sand, loam, clay, and chalk. Acid, neutral, and alkaline soils all suit it. RHS rates its cold hardiness as H7. PFAF lists USDA zones 4–8; Oregon State gives zone 5. Its roots help hold soil on slopes. Flowers feed pollinators, while birds and small mammals eat fruit. Thickets give wildlife shelter and places to nest.

Its spread can make it troublesome in gardens. RHS warns of invasive status and planting restrictions in Ireland. It advises gardeners to keep existing plants under control. RHS reports few pests, though NC State lists cane borers. Grey mould can occur, and honey fungus is a rare risk. Indigenous peoples used the fruit and valued its astringent properties. PFAF records traditional uses for leaves, roots, and bark. These records do not establish safe or effective medical treatment.