Umbra likes a position of partial sun and remember to water moderately. Keep in mind when planting that Umbra is thought of as hardy, so this plant will survive close to or on freezing temperatures. Umbra requires a loamy soil with a ph of 4.5 - 8.0 - it grows best in moderately acidic soil to weakly alkaline soil.
Growing Umbra from seed
Ensure a distance of 3.96 feet (1.22 metres) between seeds when sowing - look to sow at a depth of approximately 0.25 inches (0.64 cm).
By our calculations, you should look at sowing Umbra about 35 days before your last frost date.
Transplanting Umbra
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Umbra is a hardy plant.