Why are my happy face potentillas turning brown from the bottom up?

I planted them in May and they are now mostly brown with only some green and flowers on the top branches. They are in a 15 x 3 ft bed and all my other plants & shrubs are doing well. Orange rocket barberry, varigeted Japanese sedge and blue fescue. Photos included. I scraped one of the branches and it looks green underneath but most seem dead. Hoping I don’t lose them. Any help is appreciated.

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1 Comment To "Why are my happy face potentillas turning brown from the bottom up?"

#1 Comment By GKH_Susan On 09/24/2019 @ 4:09 am

Potentilla care includes removing some of the old stems at ground level after flowering. You can cut back the whole plant to rejuvenate it if necessary. Here is more:

https://www.gardeningknowhow.com/ornamental/shrubs/potentilla/growing-potentilla-shrubs.htm ^[1]

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