Rubus parviflorus aka Thimbleberry

Rubus parviflorus, or thimbleberry, is a shrub in the rose family. It grows wild across western and northern North America. Its range reaches from Alaska to California and northern Mexico. It also extends east to the Great Lakes region. It grows in woods, clearings, canyons, and along forest edges. It also grows beside streams, lakes, roads, and rail lines.

This shrub loses its leaves in fall and forms dense thickets. Garden plants reach about 4–8 feet (1.2–2.5 metres) tall. Their spread can reach about 8 feet (2.5 metres). The upright stems branch freely and have no prickles. Young stems are green and bear fine glandular hairs. Older stems have thin, tan bark that peels like paper. The broad leaves have three to five lobes and toothed edges. Fine hairs give both leaf surfaces a soft feel.

White flowers open from May to July, sometimes lasting into August. Their five petals look crinkled, and the blooms have a scent. Flowers grow alone or in loose groups near stem tips. Red fruit follows, made up of many small drupelets. Each fruit comes off its core, leaving a hollow centre. The flesh can taste bland or sweet and holds many seeds. Eat the fruit fresh, cooked, dried, or made into jam. Peeled young shoots and raw flowers are also edible. Plants For A Future reports no known hazards.

Grow thimbleberry in sun or partial shade with moderate water. Rich, moist soil with good drainage suits it best. It accepts sand, loam, or clay with acid or neutral pH. It tolerates drier sites, but prefers moist ground. Brief flooding is possible; lasting wetness can cause root rot. Cool summers favour fruiting, while high heat may stunt growth. Sources rate it for USDA zones 3–8 and UK H7. First-year canes do not flower or fruit. Cut spent canes after harvest and thin crowded growth.

Give this spreading shrub room to form a patch. It suits informal hedges, screens, bird gardens, and tall ground cover. Its flowers attract butterflies, and the plant attracts birds. Aphids and cane or crown borers can cause trouble. Diseases include leaf spots, mildew, grey mould, and cane blights. Root rots, wilts, and viruses can also affect it. Reported traditional uses include leaf preparations for stomach complaints and wounds. Other uses include fruit dye, bark soap, and leaves as basket liners.