How to grow Mexican Fleabane in the UK
Erigeron karvinskianus
Mexican Fleabane (Erigeron karvinskianus) is a flower that grows well in UK gardens. Self-seeds in wall crevices and paving cracks — looks intentional even when it's not. Six-month flowering. This guide covers when and how to sow Mexican Fleabane, the soil and position it likes, watering and feeding, companion planting, and when to harvest.
When to sow & grow Mexican Fleabane
Sowing and harvest window through the year (UK):
Jan | Feb | Mar | Apr Plant | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Soil, position & care
- Soil
- Fertile, moisture-retentive but free-draining soil
- Soil pH
- 6.0–7.5
- Position
- Sun or part shade depending on species
- Sowing depth
- Plant at the same depth as the pot
- Spacing
- 30–60 cm apart
- Sowing
- Plant container-grown stock spring or autumn; divide established clumps in spring
- Growing
- Water well the first season until established; mulch in spring
- Harvest & upkeep
- Cut back faded foliage in late autumn or early spring; divide every 3–4 years
- Watch for
- Slugs and snails on new shoots; otherwise robust
Companion planting for Mexican Fleabane
No specific companion notes for this plant.
Add Mexican Fleabane to your free 12-month plan and get watering & sowing reminders — no sign-up needed.
Mexican Fleabane FAQs
How much sun does Mexican Fleabane need?
Mexican Fleabane prefers full sun (6+ hrs direct).
When should I plant Mexican Fleabane in the UK?
In the UK, plant Mexican Fleabane in April. Planting in this window gives the roots time to establish before the plant is asked to grow away.
Is Mexican Fleabane easy to grow?
Easy — good for beginners. Self-seeds in wall crevices and paving cracks — looks intentional even when it's not. Six-month flowering.