Dianthus, or carnations as they are universally known, are a little like Marmite, some people love them, some can happily live without them. They should be a firm favourite for all though, as they are utterly reliable, long-lasting and are grown in a huge spectrum of colours. They may not have the delicate charm of spring flowers, the wow factor of bold Hippeastrum or the heady perfume of lilies, but they suite every occasion and where would we be without them?
Different Types of Dianthus
Standard carnations have a single open flower at the top of a long, slim stem. Spray carnations have at least five, if not more, flowers on each individual stem. Pinks (Dianthus plumarius) are short stemmed and sweetly scented and are a seasonal gem, available in the summer months only. They all share the same characteristics though, longevity and dependability.
How Long do Carnations Last as a Cut Flower?
Carnations will easily last for up to two weeks as a cut flower in water, and 7-10 days in floral foam. They will go the distance as a buttonhole as well, not wilting or drooping, however hot the weather.
Did You Know? Carnations have been cultivated for over 2,000 years and are one of the world's most popular cut flowers.
How to Care for Carnations
Standard carnations are often delivered dry. Re-cut the stems and remove any foliage that will come into contact with water.
Knuckles or nodes on the stems are a characteristic of carnations. Always cut stems between these nodes, and if a stem should snap at the node, re-trim it, as it’s difficult for the flower to absorb water through it.
Place in a clean vase with fresh water and flower food. Carnations can be water polluters, especially in hot weather, so change the water and wash out containers every two to three days.
Display in a cool spot, away from direct heat and sources of ethylene gas, to which they are very sensitive.
Need to Know
Closed standard carnations can be teased open by cupping the flower between thumb and forefinger and fluffing gently.
Closed buds on spray carnations will not open after being cut.
Su Whale is a florist and freelance writer with over twenty-five years' experience in the floristry industry.
She is the author and publisher of three best-selling books: Cut Flowers, 4th edition (2020) Cut Foliage, 2nd Edition, (2021) and Houseplants (2019), all bookshelf essentials for the professional florist.
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