pszonak
Deadheading is important for keeping wallflowers healthy and full looking. To encourage ongoing blooming, pinch back spent blooms regularly. Once the plants have finished blooming, or in the early spring in warm climates, prune the stems back at least half to prevent them from getting leggy. In cooler climates, prune them in the fall so there is only a couple of inches left above the soil, and they will reward you with dense new growth once temperatures warm up again.
