These are outdoor in Arizona right now the image I took was just a couple days ago, and right now we are (here in Tucson) are hitting 100° plus on a regular basis since the being of June and these plants are going to seed. I will have to look online for the zones, they are hot weather (summer} plants. I'll post zones when I find them online.
Osteospermum zones that I found so far are as follows:Season: Perennial USDA Zones: 9 - 10 Height: 10 - 12 inches Bloom Season: Spring through fall Bloom Color: White Environment: Full sun Soil Type: Normal, Loamy Planting Directions
Temperature: 70F Average Germ Time: 10 - 21 days Light Required: Yes Depth: Seeds must be covered thinly, no more than the thickness of the seed Sowing Rate: 2 - 3 seeds per plant Moisture: Keep seeds moist until germination Plant Spacing: 12 - 16 inches