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Rough hawk's-beard
Rough hawk's-beard (Crepis biennis) belongs to the aster family and superficially resembles the dandelion. It is found in the northern hemisphere and Africa and has been introduced to many countries. It grows in grasslands, in waste spaces, and on banks. The larvae of some butterfly and moth species eat the plants, and the seeds are eaten by birds.
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Perennial, Biennial
Lifespan
Herb
Plant Type
Late spring, Summer, Early fall
Bloom Time
1.2 m
Plant Height
2.5 cm to 3 cm
Flower Size
Brown
Fruit Color

Images of Rough hawk's-beard

Distribution of Rough hawk's-beard

Distribution Map
The plant scientifically named rough hawk's-beard is indigenous to temperate regions in Europe, showing a widespread presence across the continent. Over time, rough hawk's-beard has been introduced and naturalized in other parts of the world, expanding its range from its European origins. The species is adapted to various climates and has successfully established itself in several major regions outside its native distribution.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Anthropogenic, man-made, disturbed habitats, meadows, fields

Weed Control

Rough hawk's-beard hails from Europe, a region characterized by variable climates that contribute to the hardy nature of this weed. One characteristic that makes rough hawk's-beard a bane to gardens is its impressive ability to reproduce and spread. The plant is a biennial herb, giving it two years to establish itself, produce seeds, and scatter them widely. Additionally, it does not need any significant soil conditions or care, making it highly invasive. Its harmfulness lies mainly in its ability to take over areas, crowding out other plants and hindering growth and productivity of desired species. This damage is potentiated by the weed's prolific seed production, and the propensity of these seeds to travel via wind, animals, and water means that it can invade new gardens with ease. The main way it spreads is through its fluffy-ached seeds that are dispersed by wind, enabling it to colonize even distant habitats efficiently.
How to Control It
The best season for the removal of rough hawk's-beard is in the spring or early summer months. It is vital to remove the weed before it flowers and seeds as this helps to prevent further spread. To control this plant, you can use these methods:
  1. Hand Pulling: If you spot rough hawk's-beard in your garden, one of the organic methods to remove it is to simply pull it out by hand. Make sure you wear gardening gloves to protect your skin. Get a firm grip on the weed and pull upwards with a slight twisting motion.
  2. Smothering: Cover the area with rough hawk's-beard plants with a layer of thick cardboard or several layers of newspaper. Then, cover it with a thick layer of mulch. This will block sunlight and prevent growth.
  3. Organic Herbicides: Spray a solution of organic herbicide directly onto rough hawk's-beard. This method works best when the plant is actively growing.
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Care Guide for Rough hawk's-beard

Every week
Water
Full sun
Sunlight
20 - 35 ℃
Ideal Temperature
Water: Rough hawk's-beard originates from temperate regions and prefers consistent soil moisture without being waterlogged. For optimal growth, it should be watered weekly, mimicking natural precipitation patterns to ensure adequate hydration during its active growing season.
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RELATED: How to Grow and Care for Rough hawk's-beard
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