Ask a Question forum→Outdoor plant dying and I don't know why.

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Broomfield, Colorado (Zone 5b)
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lladams01
May 27, 2018 12:04 PM CST
Hi, my husband and I just moved to an older house (built in 1956) and there is a lot of existing landscaping and flowers including a fully xeriscaped front yard.
We moved in late July last year. I am still in the process of cleaning up and organizing the garden but there are some certain plants that appear to be dying that were healthy last July.
I have seen these before but I don't know what they are. Small cute mounds of grassy greenery with flowers that remind me of clover flowers.
The front yard has several mounds of this plant, exposed to full sun. One has died almost completely, another is almost dead and two more are starting to decay from the center. The remaining ones seem to be fine so far.

Does anyone know what could be causing it and what can be done to correct the issue or prevent it from happening to the remaining ones. I don't know how old the plants are but I am guessing 9 years or less because that is how long the previous owner was here and I think they are her handiwork not previous owners.

Update: I forgot to add the photo previously.

Thanks for your time.
Laurie Adams


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[Last edited by lladams01 - May 27, 2018 2:03 PM (+)]
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Wisconsin (Zone 5a)
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skits
May 27, 2018 12:06 PM CST
Any chance of a picture?
Broomfield, Colorado (Zone 5b)
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lladams01
May 27, 2018 2:04 PM CST
I must have missed adding the photo on the original request. I have updated it to include it, but will include in the reply as well, just in case.
Thumb of 2018-05-27/lladams01/a5c5f7

Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
Sunset Zone 15
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Calif_Sue
May 27, 2018 2:10 PM CST

Plants Admin

Look like Sea Thrift (Armeria maritima)
Looks like it got too wet in the center and rotted. They are quite drought tolerant. I would just pull out the dead center and it should eventually fill back in.
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Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
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plantladylin
May 27, 2018 2:12 PM CST
I can't really see the blooms clearly but I wonder if your plants might be Cheddar Pink (Dianthus gratianopolitanus) or perhaps another variety of Dianthus?

More photos for comparison here: https://www.coloradohardyplant...

There is a disease that sometimes affects Dianthus, Fusarium Crown Rot which kinda reminds me of your photo.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Name: Suzanne/Sue
Sebastopol, CA (Zone 9a)
Sunset Zone 15
Plant Database Moderator Region: California Cottage Gardener Garden Photography Roses Clematis
Houseplants Foliage Fan Keeper of Poultry Dog Lover Birds Hummingbirder
Image
Calif_Sue
May 27, 2018 2:18 PM CST

Plants Admin

I was thinking that too Lin but based ID more on the one behind it so it could very well be a dianthus too, can't see what's left of the blooms.
My gardening Blog!
Handmade quilts, face masks, new & vintage fabrics in my Etsy store. Summer Song Cottage
Instagram Sewing posts
Name: Lin Vosbury
Sebastian, Florida (Zone 10a)

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
Image
plantladylin
May 27, 2018 3:49 PM CST
Sue, I think you are more accurate ... it does look more like Sea Thrift!
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!


Broomfield, Colorado (Zone 5b)
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lladams01
May 28, 2018 4:50 PM CST
Based on a search of the name, I agree that it looks like Sea Thrift. What a cute name.
I'll try less water and see if that helps.

Thanks for your help.

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