You Will Get 10 Seeds Delosperma Lydenbergense Ice Plant Hardy. This great popular perennial forms unique succulent foliage and pretty pink daisy like flowers over a long period in summer, and they can spread fairly rapidly to form a ground cover, especially in dry areas or in poor soils.. They are hardy to at least USDA zone 5, and possibly colder.. These plants would make excellent additions to your rare plant collection, or just make a unique statement in your yard.