We're looking for a good groundcover around our Pentas. I have some Hardy Iceplant in the backyard I could transplant to the Pentas but would the sun and water requirements of these two plants work together? I'm thinking the Pentas might need watering more often than the Iceplant. The Pentas are on the east side of house, near the street (windy) and get full sun for 1st half of day. If not Iceplant, what else would work as a good groundcover with Pentas?