About
Conyza canadensis is an upright annual wildflower commonly classified as a weed, yet it plays a valuable role in supporting pollinators. The plant typically reaches heights of about 1 meter, with a central stem that emerges from a rosette of basal leaves during the summer months. It produces numerous small flower heads, measuring up to 3 millimeters in diameter, featuring white petals with yellow centers, all borne on short stalks.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, North-facing, East-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Annual Biennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 1 year
- Suggested uses
- Wildflower meadow, Wildlife gardens
- Native to
- N & S America
Care notes
- Cultivation
- Grows in a wide range of soil types and conditions but prefers a well-drained, fertile soil in full sun. Native to North America but widely naturalised throughout Europe and parts of the UK. It is considered to be a weed and has the potential to become a nuisance. It is not suited to garden cultivation
- Pruning
- No pruning required
- Propagation
- Propagate by seed
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free