Ensure a distance of
1.46 feet (45.0 cm) between seeds when sowing - look to sow at a depth of approximately
3.9 inches (10.0 cm).
By our calculations, you should look at sowing O'henry about 20 days after your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as O'henry is a tender plant.