February to April
WHERE TO SOW
Sow seed on the surface of lightly firmed, moist seed compost in pots or trays and cover with a fine sprinkling of vermiculite. Place in a propagator or warm place, and keep at a temperature of between 20-25°C (68-77°F). After sowing, do not exclude light as this helps germination which usually takes 10-21 days.
WHAT TO DO NEXT
When seedlings are large enough to handle, transplant into pots or trays. Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost. 30cm (12") apart or plant into baskets and containers filled with a good quality potting compost.
The plants give off a lovely fragrance when the foliage is brushed. Plant near a path edge to brush passing legs.