Description
Surface sow onto moist, well-drained seed compost from February-April.
Alternatively, sow directly outdoors after the last frost onto prepared soil.
Keep at 12-15c, germination occurs in 14-21 days.
When seedlings are large enough, transplant into 8cm pots.
Grow on in a cool greenhouse or bright windowsill, keeping the soil moist but not waterlogged.
Gradually acclimatise plants before moving them outdoors.
Plant out in full sun, in moist, well-drained soil, spacing 60cm apart, once all risk of frost has passed.
If sown directly outside, thin to 25cm apart, replanting usable thinnings.
Sow under glass between May-July for flowering the following year.
Deadhead regularly to extend the flowering period.
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