Giving plants a - Knowledgebase Question

Oceanside, CA (Zone 9A)
Question by cderbis
June 3, 2006
Dianthus: Mine are four years old. I moved this year, but would like to cut them back....will tis work? will they bush out as some plants do, or will it hurt them? I do dead-head them daily, and they are blooming nicely. But some stems are growing very long and bloomless. Would a

Answer from NGA
June 3, 2006


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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