There are so many varieties of Osteospermum around now that posting info on another seems ridiculous, but this one is very well known and...Read More available everywhere in the UK. There are many modern cultivars with deep magenta flowers with black purple centres, but this one seems to be more reliable and far more vigorous. Mine are six feet across, but plants are easy to keep within bounds.
UK plant retailers always describe it as hardy. It isn't! In the US and In very well drained soil it may survive -6C, but in the UK -4C will usually kill it, and I've not seen it often outside of Cornwall where it's reliable near the coast, and naturalises itself on some of the cliffs.
I occasionally find self-sown seedlings which often 'come true', and I wonder if this plant is really just a form of O. jucundum or barberae. It's very easy to propagate -- almost any cuttings will root, it's evergreen and flowers on and off throughout the year, although April, May, and June are best.
It's worth trying in the milder counties and may survive outside of Cornwall with some protection.
There are so many varieties of Osteospermum around now that posting info on another seems ridiculous, but this one is very well known and...Read More