Wallflowers are sown a full year before they ever flower, which catches out anyone expecting a same-season display.
Wallflowers are biennial, meaning they’re sown a full year ahead of the spring display they’re grown for — an easy detail to miss if you’re expecting a same-year flower. They’re moved from a seedbed to their final flowering position in autumn, ready to bloom the following spring.
Sowing & growing calendar
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow | Sow in June | Sow in July | ||||||||||
| Plant | Plant in September | Plant in October |
Care details
- Sow June – July
Sow now in a seedbed for flowers next spring — wallflowers are biennial, sown a full year ahead of blooming.
- Plant September – October
Move young plants to their final flowering position.
Growing tips & common problems
- Sow in a spare corner or seedbed in early summer, not where they'll finally flower — they're moved later.
- Pinch out the growing tips of young plants to encourage bushier growth before winter.
- Move to their final flowering position in autumn, giving roots time to establish before the cold sets in.
Grows well with
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