Answer: You can cut both your dianthus and your lobelias back, which will encourage another flush of blooms. Wait until they have finished flowering, then cut the plants back by one-half. Your dianthus may be in need of dividing if they've been in the same spot for four years. You can dig the entire plant and divide it into several sections, making sure each section has both roots and stems. (Spring and fall are the best times to dig and divide but if your weather is still cool, you can do it now.) Best wishes with your plants!
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