Osteospermum is a relatively recent addition to the gardening world and has only been available in the trade since the early 1990s. With their cheerful, daisy-like blossoms, osteospermums were an ...

I bought an osteospermum in flower two years ago and kept it indoors over winter. Since then it keeps growing long stems, but has never flowered again. What's wrong? I think the problem may be that ...