Scotch Broom

Cytisus scoparius

On hot summer days, its ripe seed pods dry out and violently snap open with an audible cracking sound, catapulting seeds several meters away.

Scientific name
Cytisus scoparius
Taxonomy
Plantae › Tracheophyta › Magnoliopsida › Fabales › Fabaceae › Cytisus
IUCN Red List status
Least Concern
Population trend
increasing
Biome
grassland
Habitat
Dry, sandy soils, disturbed grasslands, pastures, roadsides, and open forest edges.
Diet
Autotrophic (Photosynthesis / Nitrogen-fixing)
Range
Europe, North America, Australia, New Zealand
Size
1 to 3 meters (3 to 10 feet) tall
Lifespan
10 to 15 years, though its seeds can remain viable in the soil for over 30 years.
Active
diurnal
Threats
Targeted manual eradication, biological control insects like the broom seed weevil, and dense forest canopy shade.
Safe to approach?
Harmless to touch, but all parts of the plant are toxic to humans, livestock, and pets if ingested due to quinolizidine alkaloids. Safe to observe from any distance. If ingested, monitor for symptoms such as nausea or an irregular heartbeat, and seek medical or veterinary attention immediately.

Cytisus scoparius , the common broom or Scotch broom , syn. Sarothamnus scoparius , is a perennial leguminous shrub native to western and central Europe. In Britain and Ireland, the standard name is broom , but this name is also used for other members of the Genisteae tribe, such as French broom or Spanish broom, and the term common broom is sometimes used for clarification. In other English-speaking countries, the most prevalent common name is Scotch broom (or Scot's broom );...

Photo: Jonathan Eyestone, CC-BY, via iNaturalist

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