I am just now trying Begonia grandis from seed. The easiest propagation method is to collect the tiny bulbils that grow in the leaf axils and plant them where you want them. A single plant will get you started and can be found online easily. I find this very useful and attractive for late summer color in the semi-shaded areas of my garden. Some sunlight promotes more blooms. Hosta and fern companions are appreciated, and pink roses nearby help trying out the color.
