Remove old flowerheads to promote new blooms. Will strike easily from cuttings in late summer and can be overwintered under protection
Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Double Cascade Blue F1 is thought of as half hardy, so remember to protect this plant from frosts and low temperatures.Sow on surface of moist compost, do not exclude light, germinates in 10 to 21 days
Try to aim for a seed spacing of at least 0.78 inches (2.0 cm) and sow at a depth of around 0.04 inches (0.1 cm). Soil temperature should be kept higher than 21°C / 70°F to ensure good germination.By our calculations, you should look at sowing Double Cascade Blue F1 about 77 days before your last frost date.
Pot on into small 7cm pots untill well established, then plant out after danger of frost has passed. Useful in baskets and containers
Ensure that temperatures are mild (minimum night temperatures should be around 12°C / 54°F) and all chance of frost has passed before planting out, as Double Cascade Blue F1 is a half hardy plant.Petunia flowers are best enjoyed on the plant