Rubus odoratus (Flowering Raspberry)


Michael's Opinion

A great woodland edging plant with attractive, clean leaves and fresh pink blooms. It can easily spread where conditions are ideal, but is easily pulled back by hand.

Botanical Information

FamilyRosaceae
GenusRubus
Speciesodoratus
CategoryWildflowers & Weeds, Woody
TypeShrub (deciduous)
OriginThe flowering raspberry is native to Eastern North America including Quebec, Ontario, New Brunswick and Nova Scotia.
Ethnobotanical Uses
Disclaimer
Fruit is edible.
Pronunciation

Details

USDA Hardiness Zone4
USDA Hardiness Ref.
Canadian Hardiness Zone4a
Canada Hardiness Ref.
RHS Hardiness ZoneH7
RHS Hardiness Ref.
Temperature (°C)-31 - (-34)
Temperature (°F)-25 - (-30)
Height80-170 cm
Spread3 m
GrowthFast
Flowering PeriodMay

Description and Growing Information

General DescriptionThe flowering raspberry is a beautiful shrub that has very large palmate leaves and a pretty purple flower with a yellow center that is hard to miss. For these reasons, the plant can be often spotted in residential gardens. It can also be cultivated for its fruit which are usually turned into jams or other preservatives. This plant also attracts all sorts of wildlife, including species like the bumble bee, honey bee and native bee. Many birds will also make their nests in the plants as they find it so dense that it provides a safe and suitable home.
ID CharacteristicEasily recognizable by large maple-looking leaves and their bright purple flowers with yellow centers blooming in May.
ShapeDense and upright and when mature forms thickets.
LandscapeSince the flowering raspberry is an attractive looking bush that produces an edible fruit, it is not uncommon to find it in residential gardens. Raspberry plants are fairly aggressive in terms of growth; they grow rapidly and spread quickly due to their tenacious root systems. The flowering raspberry, however, is slightly less aggressive than other Rubus species. It can grow very large (up to 3 m) and has attractive, wide palmate, simple leaves, therefore it can be used as a decorative plant or for its fruit.
PropagationIt can be propagated by seed or hardwood cuttings. Cuttings should be taken in middle to late winter during dormancy, collect pencil thickness stems in 15 cm sections, be sure to remember which is the top and bottom. Apply a number three rooting hormone and stick in sand under bottom heat.
CultivationPlant in partial shade with a soil pH that is 6.8 or below. Granular and/or sandy or deep forest loam are ideal.
PestsRubus odoratus is fairly immune to pests and diseases. Although there is one fungus that is of concern: the honey fungus. The flowering raspberry will attract all kinds of insects pollinators but most common will be the bee.
Notable SpecimensThe A. M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatThe flowering raspberry can be found in several eco-zones, including the boreal shield and the Atlantic maritime regions. Its natural habitats are woodland and forest edge.
Bark/Stem DescriptionLight beige to brown exfoliating thin bark.
Leaf DescriptionLeaves are light-mid green, leaves are simple, palmate, opposite, 7-10 cm wide and rough to the touch.
Flower DescriptionThe flower of Rubus odoratus is purple, although some of the flowers may show up as pinkish-purple. The flowers are most spectacular in Ontario, where they are much larger and more noticeable than in other Canadian provinces. The blooms are five petalled and are from 5-7 cm in diameter with pronounced yellow anthers.
Fruit DescriptionThe fruit is very similar to the common raspberry, but it is slightly larger and has a distinctive vanilla taste.
Colour DescriptionThe plant has green foliage, blooms from pink to purple while the stems are beige to brown.
Texture DescriptionA coarse textured plant.

Photographs