Answer: Osteospermums are half-hardy perennials or subshrubs. This means they are not entirely hardy and will therefore not survive persistent frosts. However, they can be propagated by cuttings or overwintered in a frost free environment. If your plants are leggy, cut them back. Cutting back Osteospermums won't harm them. In fact, they will grow new fresh side shoots in no time. We normally take our stem tip cuttings in autumn, although they can be rooted at any time of year given the right conditions. Always choose non-flowering shoots. Use a hormone rooting powder or liquid, containing a fungicide to prevent basal rotting. Just set the tip cuttings in moistened potting soil and they should root within 3-4 weeks.
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