The shrub num-num (Carissa macrocarpa) and the ground cover num-num (Carissa macrocarpa ‘Green Carpet’) both have beautiful glossy leaves with compact, thorny growth. They have star-like white flowers which have an orange-blossom fragrance with elongated mini plum-like num-num fruit, which is red when ripe. They can be eaten raw or made into jams or jellies. The num-num shrub is also rather impenetrable as a hedge. Carissa’s love the coastal weather but grow in most areas with light to mild frost e.g. they grow in most Johannesburg gardens but are harmed by the heavier frost in the Vaal and Free State regions.