Propagation
The easiest way to propagate nerines is to split clumps of bulbs in spring. Three or four years after planting, the bulbs should have multiplied well and produced lots of baby bulbs, called ‘offsets’. They are simply prised away from the main bulb and planted in the same way as the original bulbs. Newly planted offsets may take three or four years to flower while the young bulbs build up their energy reserves. Nerines are also easy to propagate from seed. If the flowers are left on the plant, they will develop fat seedpods, which look similar to grapes. If left intact on the plant, they will naturally produce seedlings, which can be pulled off and potted into a mix of two parts John Innes No. 2 compost and one part grit. They are grown on in a cold greenhouse or on an unheated windowsill through the winter and planted out in the garden or in containers in the following spring. They should flower three years after planting.