Gardening Questions And Answers
Most dianthus, other than China pinks, are hardy even in sub-zero temperatures. Still, you can encourage the best flowering by protecting the plants from the drying winds and colder temperatures in winter. The extra protection of a frost blanket on nights below 40 F may be necessary for China pinks.
Dianthus flowers have five petals and come in a variety of colors including all shades of white, pink, yellow and red, with a huge variety of flower shapes and markings. The leaves are often glaucous grey-green or blue-green. Dianthus should not be mulched because good air circulation around the stems is needed.