Smooth blackberry (Rubus canadensis)

Smooth blackberry

The inflorescence is a cluster of up to 25 flowers. The fruit is an aggregate of many small drupes, each of which contains a tiny nutlet. The plant reproduces by seed, by sprouting up from the rhizome, and by layering. The stems can grow one meter (1.02 m) in height in under two months.

Scientific classification

Species

Smooth blackberry (Rubus canadensis)

Roses, elms, figs, and allies

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Perennial

Lifespan

Shrub

Plant Type

Spring, Summer

Bloom Time

2 m to 3 m

Plant Height

1.8 m to 3.5 m

Spread

Green, Blue

Leaf Color

Black

Fruit Color

Spring, Summer

Growth Season

Moderate

Growth Rate

Images of Smooth blackberry

Distribution of Smooth blackberry

Distribution Map

Smooth blackberry is native to North America's northern forest ecosystems. It has been introduced to parts of Northern and Central Europe, emphasizing its capacity to establish itself outside its natural range. The plant has adapted to various habitats across these major regions, showcasing a degree of ecological versatility.

Native

Cultivated

Invasive

Introduced

No species reported

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Quickly Identify Smooth blackberry

Smooth canes without thorns distinguish smooth blackberry from related species.

Palmately compound leaves with 5 leaflets aid in smooth blackberry identification.

Erect to arching stems, slender with no prickles, reach 10 feet (3 meters) in length.

White, 5-petaled flowers in clusters of up to 25 blooms bloom June-July.

Fruits are aggregate drupes, 1 inch (2.54 cm) long, ripe from July to August.

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Care Guide for Smooth blackberry

Every 3 weeks

Water

Full sun

Sunlight

0 - 32 ℃

Ideal Temperature

Water: Smooth blackberry thrives in woodland-like environments with periodic rainfall and rich organic matter. It prefers moderate moisture and consistent humidity, requiring watering every three weeks. Grown outdoors, it favors well-draining soil to maintain optimal moisture during its active growing season without becoming waterlogged.

Fertilize: To promote healthy growth for smooth blackberry, use balanced fertilizers (10-10-10) in early spring and high-nitrogen ones before flowering. Limit applications to once per season to avoid harm. Maintain fertilization during fruiting and apply around the drip line to prevent burn.

Pruning: Smooth blackberry flourishes with effective pruning, including the removal of dead canes and cutting back old stems in early spring. This practice boosts new growth, fruit yield, and air circulation, while reducing disease risk. Cane thinning is crucial for sunlight penetration, promoting overall health and productivity.

Propagation: Smooth blackberry propagates effectively via cuttings. In late spring or early summer, select healthy shoots, cut a 4 to 6-inch section, remove lower leaves, and apply rooting hormone. Plant in a well-drained medium, ensuring consistent moisture and high humidity for successful root establishment.

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