We have been successful in raising these seeds by direct sowing into the sandy loam or just using the 'Flotation method' which is described in detail within my book.
Once they have settled into the pot leave them there for another six months before moving them out into full sun.
Water well at first but then just a sprinkle every other day just to keep moist.
The bulb is listed as an evergreen in as much as it doesn't have a full dormancy period as other Hippeastrum do. Usually the first to bloom, in our area, around August, it has 2 blooms per scape but bulbs that are 6 years and older can have 3 blooms.