Bountiful Gardens

The High-Contrast Jewel: Osteospermum

Osteospermums are unique because they aren't just "flat" daisies. Some varieties, known as "Spoon" types, have petals that pinch in the middle and flare out at the tips like tiny spoons. Like their cousins the Gazanias, they are phototropic—they often close their petals at night or on very overcast days to protect their pollen.

Role in the Garden

• Design Category: Filler. They grow in a sturdy, mounded habit (10–14 inches tall), providing a dense "carpet" of large, showy flowers.

• Best Placement: They are the "models" of early-season containers, window boxes, and sunny borders. They look particularly expensive when planted in ceramic pots that echo the blue of their centers.

• Bloom Season: Spring and Fall. They are "cool-season" lovers. They put on a massive show in May and June, often take a "siesta" during the blistering heat of August, and then return for a spectacular second act in September and October.

Care & Maintenance

• The "Cool Night" Secret: Osteospermums need cool nighttime temperatures to trigger flower production. If your plant stops blooming in July, don't throw it away! It's just waiting for the thermometer to drop so it can start again.

• Deadheading for Longevity: To keep the blooms coming, snip off the spent flower heads down to the first set of leaves. This prevents the plant from putting energy into seeds.

• Full Sun for "Open" Flowers: To see those incredible centers, they must be in full sun. In the shade, the flowers will remain stubbornly closed.

• Moderate Water: They are quite drought-tolerant once established but prefer to be kept consistently moist during their peak blooming periods.

The Essential Tip for Beginners

The "August Haircut": When the heat of mid-summer arrives and your Osteospermum looks a bit "tired" and stops blooming, give it a "shave." Cut the plant back by about 4 inches. It will look like a plain green mound for a few weeks, but this "reset" will result in a much bushier, more flower-packed plant once the cool breezes of autumn arrive!