- Lifespan
- 2–3 years (biennial or short-lived perennial)
- Size & Weight
- 30–90 cm tall; flower heads 15–25 mm diameter
- Habitat
- Grasslands, meadows, roadsides, disturbed ground, and field margins throughout the UK.
- UK Distribution
- Found across the entire UK, including England, Scotland, Wales, and Northern Ireland; resident and non-migratory.
- Diet
- Not applicable—this is a flowering plant that produces nectar and pollen.
- Predators
- Herbivorous insects such as weevils and seed-eating birds feed on seeds; plant tissues grazed by rabbits and deer.
- Mating Season
- Flowering period June to September; pollination occurs throughout this time.
- Breeding
- Wind- and insect-pollinated; produces numerous seeds dispersed by wind and animal fur; seeds germinate in spring.
- Behaviour
- Common Knapweed is a robust, self-seeding plant that thrives in undisturbed grasslands and often dominates in nutrient-poor soils. It is particularly valuable for pollinators, especially bees and butterflies, and forms a key component of traditional meadow ecosystems.