Follow packet instructions if there is packaging. My pink Nerine Bowdenii are in the garden in dappled shade. Bulb shoulders showing. Over the years they have formed a circle. The outside ones, which are the newest, bloomed very well last summer. They stood up to this last winter really well. I have some in a pot. There are several intruders and I had one flower last year. Don't like disturbance, so will have to go on sharing.