Dividing Dietes The best way to do this is to dig up the whole clump and divide them. Try watering them well first to make digging easier. You can remove almost all of the old foliage, and then replant the rhizomes in soil that have been renewed with some compost and manure.

How do you propagate dietes grandiflora?

However, for best results and most flowers, plant Dietes grandiflora in full sun or light shade in well composted, well drained soil and water well in summer. The large wild iris is easy to propagate from seed sown in spring or by dividing large clumps which spread by means of rhizomes.

Can you grow Dietes from seed?

Soak seed overnight in water. Sow on the surface and cover lightly. Do not bury deeply as seed requires a degree of light to germinate. Germination should occur in 21-18 days @ 15-20°C.