Rose campion "Occulata" in bloom.
image by Kurt Steuber/Wikimedia.org
Rose campion "Occulata" is a white-and-pale-pink-centered varietal of the perennial flowering plant species. Occulata blooms in spring and summer on tall slim stems that can reach 30 inches in height. It readily reseeds after bloom and is hardy in USDA zones 4 through 8. The seeds can be sown either in the fall or spring. When sown in the fall in its natural zones, "Occulata" will successfully overwinter as a young plant and bloom later thenext spring. In cooler climes, beyond its natural zones, "Occulata" can be started indoors in the early spring and planted in the garden after the last frost has passed.
Harvest "Occulata" during the spring and summer for use in cut flower arrangements. Cut back down to the base of the stem. Deadhead fading flowers to encourage fresh bloom throughout the growing season. Allow at least some blooms to remain on the plant in the summer and go to seed. They will self sow in situ and easily germinate to produce seedling plants.
Water your rose campion well in the fall to fortify the plant against winter drought. Do not fertilize your rose campion since the plant does not need it at this time and will only serve to drive top growth, which might not have time to harden off before cooler winter weather.
Mulch around the base of the plant in the late fall with an organic material to insulate the roots. Use at least a 2-inch thick blanket of shredded bark, compost or cocoa bean hulls for best effect. For climates at the lower end or below the hardiness zones, cut off any dead plant foliage in late fall after the first hard frost and then mulch over the roots.