Can be wintersown or spring sown.
Aim to sow 0.2 inches (0.5 cm) deep and try to ensure a gap of at least 0.25 inches (0.64 cm). Soil temperature should be kept higher than 10°C / 50°F to ensure good germination.By our calculations, you should look at sowing Greenheart orange about 35 days before your last frost date.
Greenheart, pot marigold