NJBob said:Do you have Black vine weevils in your area? They eat the roots. Also might be time for dividing , not all but many need it about every 3 years.
springcolor said: Have you given the plant a gentle tug? If it has evils it will come up easy. Sometimes you get gifted with those things when you buy a plant. Bought a sedum from Lowe's once with those nasty things.