Cut back hardy Osteospermum in early Spring or after flowering in Autumn and then dead head spent flowers to encourage growth of more flowerheads. Regular feeding throughout the flowering period is highly recommended to be rewarded with more flowers over a longer period. Osteospermum ground cover plants prefer drier, poorer quality soil and as much sunlight as they can get, ideally in a sheltered position.
As a rough guide when planting Osteospermum as ground cover – 4 plants per square metre is adequate with a little patience, 6 will give better coverage, and 9-12 will make a weed supressing carpet very quickly.
How to grow Osteospermum
Position: Sun or partial shade in a sheltered site
Soil and site: Poor/dry but well drained. As they dislike cold, heavy soil, improve your soil before planting by adding plenty of grit to help drainage
Flowering time: Laste Spring/Early Summer through to mid-late Autumn
Growth rate: Moderate
Ultimate height and spread: Clump forming, so width will grow over time. Height 10-50cm depending on variety, spread to 90cm
Hardiness: Hardy once established
Aftercare: Water well but gently until established but avoid soil becoming waterlogged. Feed regularly during the flowering period and cut back spent blooms to encourage more flowers