Answer: There are annual, biennial, and perennial types of dianthus. Dianthus species include Sweet Williams, carnations, and various pinks. Sweet Williams and pinks make fine bedding plants, growing to a height of 6 to 15 inches depending on the variety. Sweet William is usually grown as a biennial (flowering the second year) but may flower the first year if sown early enough. Some pinks are annuals, others are perennial.
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