Scotch broom oozes toxic substances into the soil that prevents native plans from establishing.
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Scotch Broom (Cytisus scoparius)
Description
- Native to British Isles, central and southern Europe
- Flowers are yellow and pea-like
- Woody, 5-angled stems that can grow to 3 m tall
- Flat-hairy seedpods that start as green, but turn to a blackish brown color
- Grows in dry, sandy soils in full sunlight
Consequences of Invasion
- Is a serious threat to rare ecosystems
- Forms dense colonies that crowd out native plants
- Produces up to 18,000 seeds per plant
- Seeds can remain viable to at least 30 years
- Produces toxic substances that prevents other plant life from establishing
- Serious rangeland invader
- Limits movement of large animals
- Can lead to increased wildfire fuel loads
Prescription for Control
- Remove the broom before it flowers to prevent seed maturation
- Cut larger plants below ground level
- Smaller plants (stem girth under 1.5 cm) can be hand pulled
- Repeat treatment over a 3-5 year period
- Replant the treated area with competitive shrubbery
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