Do Dianthus Flower Twice. This is best done in early spring. Separate dianthus clumps into 4 or 5 sections.
Once the plant cannot produce seeds it will create new flowers in order to try to produce seeds. Non-hybrid dianthus varieties can be encouraged to keep producing flowers. Mar 11 2020 You can divide dianthus every 3 to 4 years as new growth begins in the spring.
Depending on the species some dianthus flowers may only need to be deadheaded once or twice during the growing season while others may need attention every week.
Foliage is strappy and grass-like occurring in shades of green blue-green or silver-green. Some alpine types of dianthus do best in slightly alkaline soil. They are mostly double flowering and come in two sizes 3 to 6 inches. Remove the mulch after the last of the frosts pass and allow the plant to start the growing season.