Arnold, I am amazed to see a four years old plant that size. Is it close to flowering size I suppose? Now, the problem. I am growing this species from seed too and the seedlings (1 yr) are abt 1" (2,5cm). They are in tall and narrow pots, as they have a big root system, in a sandy soil. In spite of the watering they are going dormant now, but I read it is mainly summer growing. At this point I am stopping waterings and leave them to do what they want. Here we are over 30°C and the last week over 35°C and doesn't rain from a month. I think this is another of those South African species that are fully winter growing here, like Crinum moorei, Zantedeschia aethiopica, Freesia alba. Also my Veltheimia are dormant from some weeks. Angelo Porcelli Italy