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Vick, Albert F. W.
Rubus odoratus L.
Purpleflowering raspberry, Purple-flowering raspberry, Thimbleberry
USDA Symbol: RUOD
USDA Native Status: L48 (N), CAN (N)
A suckering shrub, 3-6 ft. high and 6-12 ft. wide which forms broad patches. Five-lobed, maple-like, dark green leaves become pale yellow in fall. Large, pinkish-purple flowers occur singly or in few-flowered clusters. Fruit is a broadly rounded, red to purple berry. Canes are thornless, yellow- to orange-brown, and exfoliating. This erect, shrubby, thornless plant has rose-lavender flowers in loose clusters; new branches have bristly hairs.
Thimbleberry (R. parviflorus), with very similar white flowers and similar but smaller leaves, occurs from Alaska to Mexico and northeast to Ontario. Baked-apple Berry (R. chamaemorus), is a dwarf form only 12 (30 cm) tall, with a solitary white flower, an amber-colored berry, and leaves similar to the above, but smaller. It is found on mountaintops in New England and northward into Canada. All other species in the East have compound leaves and usually spiny stems.
Plant CharacteristicsDuration: Perennial Habit: Shrub Leaf:
Green Autumn Foliage:
Red Size Class:
Bloom InformationBloom Color: Pink , Purple
Bloom Time: Jun , Jul , Aug
, WV Canada: NS
, QC Native Distribution:
s. to NC
& TN; also n. IL Native Habitat:
Moist, shady places; woods edges
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
CaCO3 Tolerance: Medium
Soil Description: Gravelly, sandy, or deep forest loams.
Conditions Comments: Thimbleberry spreads rapidly from creeping, underground stems and can become a nuisance, but is a striking plant for large wooded areas. Relatively immune to pests and diseases. Berries are insipid, but edible.
BenefitUse Wildlife: Very high for songbirds, game birds, and large and small mammals.
Conspicuous Flowers: yes
Fragrant Flowers: yes
Fragrant Foliage: yes
PropagationDescription: Information about propagation by seed or cuttings is scarce because plants are so easily obtained by digging up suckers.
Seed Collection: Rubus fruits should be collected as soon as ripe to prevent losses to birds. The seeds can be extracted by macerating in water.
Seed Treatment: The hard, impermeable seed coat needs scarification. Both H2SO4 and sodium hypochlorite have been used. Scarification is sometimes followed by a complex combination of warm and cold stratification.
Commercially Avail: yes
From the National Suppliers Directory
According to the inventory provided by Associate Suppliers, this plant is available at the following locations:
- Springwater, NYAmerican Native Nursery
- Quakertown, PA
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
Mt. Cuba Center
- Hockessin, DE
Record Last Modified: 2012-12-09
Research By: TWC Staff