The plants benefit greatly from regular liquid feeding. Scadoxus multiflorus ssp katharinae likes plentiful water when in active growth, but dislikes water-logged soils. In winter rainfall areas, it has no trouble surviving the wet winters, provided it is in a well-drained position. This is a very useful plant for shady gardens, a handsome pot subject for a large container on a shady stoep, and it is recommended as an indoor plant. It looks particularly effective in large groups under trees, where they do not seem to mind competition from tree roots, provided the soil is good.
Propagation is by seed and offsets.
The seed should be sown as soon as it is ripe. This does not necessarily mean that the berries must be removed the minute they turn red. If they are not under threat from birds, or curious children, they can be left on without harming the seed until they start to look a bit wrinkled, which should be around early spring. Clean the pulp off, with care as the seed underneath is soft and fleshy. The best is to rub or peel it off.