Asian crabgrass (Digitaria bicornis)

Asian crabgrass

Also known as: Tropical crabgrass

Asian crabgrass is a common weed in lawns and gardens. It has economic value as a forage crop for livestock and is an important food source for birds and insects.

Scientific classification

Species

Asian crabgrass (Digitaria bicornis)

Grasses, sedges and allies

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Perennial

Lifespan

8 cm to 60 cm

Spread

White, Green

Flower Color

Semi-evergreen

Leaf type

Rapid

Growth Rate

Images of Asian crabgrass

Distribution of Asian crabgrass

Distribution Map

Asian crabgrass is native to various regions in Asia and parts of northern Africa. The plant has also established itself in certain areas of South America and the Pacific. Though introduced to many parts of Central America, the Caribbean, and a few locations in Africa, asian crabgrass is sometimes thought to be invasive, potentially having an impact on local ecosystems, particularly noted in one Caribbean nation.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Quickly Identify Asian crabgrass

Low spreading growth habit forming clumped patches.

Narrow grass-like leaves with serrated or wavy margins.

Inconspicuous wind-pollinated flowers in racemes with bicornuate appearance.

Smooth, slender green stem without hairs, branching occasionally.

Small achenes enveloped in soft, velvety hairs with winged shape.

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Care Guide for Asian crabgrass

Twice per week

Water

Full sun

Sunlight

Garden Soil

Soil Type

Water: Asian crabgrass thrives in humid environments, requiring consistent moisture and moderate drought tolerance. To replicate natural conditions, water asian crabgrass twice a week. It benefits from rainwater over tap water for better nutrient absorption, especially when exposed to varying outdoor weather patterns.

Pruning: Asian crabgrass exhibits rapid growth and a weedy look. Prune in early spring to promote health and restrict spread by using sharp shears on overgrown stems. Regular maintenance is essential for managing size and ensuring efficient energy use during the growing season.

Propagation: Asian crabgrass is propagated by division; split the root ball gently, ensuring each section has roots. Plant at the original depth to minimize transplant shock. Regular watering and avoiding intense sunlight initially will aid in its establishment.

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Learn More About Asian crabgrass

How to Transplant

How to Prune

How to Grow and Care

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