Japanese raspberry (Rubus parvifolius)

Japanese raspberry

Also known as: Herbaceous myrica, Small-leaf raspberry

The japanese raspberry is a perennial shrub that is native to northern China, Korea and Japan. Introduced to the U.S. in 1890, it grows as a briar-encrusted invasive weed, much like the blackberry. It blossoms with numerous red or pink petals in spring that later yield shiny red berries. The fruit it bears is considered delicious and is often used in desserts, jellies and wine.

Scientific classification

Species

Japanese raspberry (Rubus parvifolius)

Roses, elms, figs, and allies

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Shrub

Plant Type

Late spring, Early summer

Bloom Time

Late spring, Early summer, Mid summer

Harvest Time

1 m to 2 m

Plant Height

1 m

Spread

Green

Leaf Color

1 cm

Flower Size

White, Purple

Flower Color

Deciduous

Leaf type

Images of Japanese raspberry

Distribution of Japanese raspberry

Distribution Map

Japanese raspberry is native to East Asia, flourishing in diverse regions across this major area. It has been introduced and is cultivated as a plant of interest in other parts of the world, although the exact introduced range is not specified. Japanese raspberry is recognized for its ability to adapt to various climates outside its native habitat.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Roadsides, waste ground in lowlands, low mountains, forests

Hemisphere Trend Curve

Northern

Sorthern

Toxicity

Japanese raspberry's seeds are mildly toxic to humans, causing gastrointestinal discomfort and mouth/throat irritation upon ingestion. Dogs and cats may also experience physical discomfort after consuming the seeds. Prompt veterinary care is essential if symptoms appear in pets. Proper precautions should be taken to prevent access to japanese raspberry seeds for both humans and pets.

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Care Guide for Japanese raspberry

Every 3 weeks

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Japanese raspberry prefers well-draining soil and moderate moisture, thriving with a watering schedule of once every three weeks. It tolerates brief dry spells and enters dormancy in colder months, reducing water needs significantly.

Fertilize: To maximize growth, japanese raspberry requires balanced nutrition fertilizers (10-10-10 NPK) during the growing season, with high nitrogen applications in spring. Fertilize every 4-6 weeks (1/2 cup per mature plant), avoiding over-fertilization. Water before and after application to enhance absorption, and reduce fertilization in winter.

Pruning: Japanese raspberry features small leaves and thorny stems, benefiting from early spring pruning. Removing weak or dead canes enhances air circulation and sunlight access, while trimming lateral branches boosts fruiting. This practice reduces disease risks and promotes strong growth for a longer productive lifespan.

Propagation: Japanese raspberry propagates effectively through cuttings. Select a healthy stem, cut at a 45-degree angle below the node, strip lower leaves, and dip in rooting hormone. Plant in well-draining soil, maintaining humidity. With proper care, roots will develop, allowing for transplantation.

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