How to grow Sweet william 'Blue Hedgehog'
Keep in mind when planting that Blue Hedgehog is thought of as hardy, so this plant will survive close to or on freezing temperatures.
Growing Blue Hedgehog from seed
Transplanting Blue Hedgehog
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Blue Hedgehog is a hardy plant.
Harvesting Blue Hedgehog