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I have 2 beautiful perennial dianthus that has all the bloom gone and the plant looks terrible. I planted these from seed last year and when in full bloom, they were beautiful. Do I cut them back severely or will they clean themselves out for another bloom. Here is a picture of them while in bloom.
I actually thought I had planted annual dianthus, was very surprised to see they came back and especially the size they were this year. I will try cutting them back and see if I can force a second bloom.
I wonder if you planted biennial dianthus? I have some of them that I planted last year and it sounds like mine are just about in the same shape as yours- the foliage looks horrible. But I can't cut them down if I want them to reseed for next year.
I didn't know there was a biennial Dianthus- mine were labeled Raspberry surprise- planted last summer and stayed alive through winter, and in the spring I cut back the winterkill, and they were beautiful this year. Now they look terrible, and instead of nursing them another year, I just bought some replacements- 2 6packs, and will start over and see if I get the same next year. My present plants look really over the hill!
Hm, I thought the same thing as Ayah . . . planted a bunch of small ones last year as annuals. I pulled most of them out during fall clean-up, but there were 3 still blooming in October so I left them alone. They all came back this spring, 2 of them quite vigorously, and bloomed gorgeously. I wasn't sure what to do with them when they were done so I just cut them all back the other day. We'll see what happens. Since I wasn't planning on them being perennial I won't be terribly heartbroken if I get nothing more from them.
I've never tried getting cuttings, but my guess would be that they would still play out their biennial destiny. I plant dianthus early spring, and when they start petering out in the summer, I overplant them with periwinkle (flowering vinca), which provides color for the hot months and into the fall. BTW, if you keep the dianthus deadheaded, it will keep putting out new blooms until hot weather. You can actually just shear them off and they come back quickly. I shear just one small area at a time so I am never completely without color.
Well, I cut back the plants and will wait to see what happens with a rebloom. I did not know they were biennial. I am going to check the seed catalog to see what the name of these were. Thanks for all the replies to my question. I'm new here and sometimes forget to check out my own posts.
I have multiple varieties of dianthus. Following the first full bloom, I shear off all the blooms. Not the plant, only the stems holding the blooms. Most dianthus gives me another wave of blooms. Oh, continue to feed.
Sweet williams again.
Here they seem to be taller and most definitely have a different leaf type.
The deep red one is called'' sooty''
They are easy to start with the winter sow method, they will also reseed but I usually fail to recognize the seedlings and they get pulled.
These are also perennial here. I call them the ''carnation type'' because of there flower, but I think they are called'' clove pinks''by most. Some have a nice spicy smell thus the (clove ) reference.
They bloom later than the ones I posted above. For me in mid June after the others are gone.