How to grow Tulip 'Prins Willem Alexander'
Keep in mind when planting that Prins Willem Alexander is thought of as hardy, so it can be safe to leave outdoors for the majority of winter (although if in doubt, using a row cover is often a good idea).
Growing Prins Willem Alexander from seed
Aim to sow 3.9 inches (10.0 cm) deep and try to ensure a gap of at least 3.9 inches (10.0 cm).
Transplanting Prins Willem Alexander
As Prins Willem Alexander is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.
Harvesting Prins Willem Alexander