How to grow Lily of the valley 'Prolificans'
Prolificans is generally regarded as a hardy plant, so this plant will survive close to or on freezing temperatures.
Growing Prolificans from seed
Try to aim for a seed spacing of at least 7.8 inches (20.0 cm) and sow at a depth of around 0.94 inches (2.4 cm).
Transplanting Prolificans
Prolificans is hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.
Harvesting Prolificans