Keep in mind when planting that Ochroleuca is thought of as hardy, so this plant will survive close to or on freezing temperatures.
Try to ensure a gap of at least
7.8 inches (20.0 cm) when sowing to prevent overcrowding your seedlings.
By our calculations, you should look at sowing Ochroleuca about 42 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Ochroleuca is a hardy plant.