What is the best geranium to use for a fairly low ground cover? The side of our house (corner house) has a large bare area that I would love to plant geraniums. I'd like the geraniums to spread throughout this area (small area, not real big). Would Ivy Geranium be the one or the Hardy Geranium? Geraniums grow great where I am in San Jose. I have several plants. Some are Ivy in pots and they "hang" over.