Biennial
Branching type producing substantial spikes the following may. Sow summer. Sow at 15-20°C June to July covering seeds with compost or vermiculite.

Sowing Information
Common/Latin Name: Matthiola incana
Type: Tender annual
Temperature: 15-20°C
Cover: Average layer vermiculite or compost
Date: Sow Nov - to late winter
Advice: Grow cool after emergence of seed to encourage colour differentiation for selection on selected varieties only. Only the pale yellow/green seedlings will produce double flowers. Discard green seedlings. Biennials see description for sowing information