Dieramas need adequate space to look their best. They can be planted in borders or gravel gardens, and look good grown with ornamental grasses. They are attractive near water, but careful positioning is necessary as the corms must not get too wet over winter.
Choose an open, sunny position in a fertile, loamy, moist, but well-drained, soil, which doesn’t dry out in summer or become waterlogged in winter. Heavier clay soils and lighter sandy soils should be improved by incorporating well-rotted organic matter. Alternatively, dieramas do well in raised beds.
Dierama corms are best planted in spring, with the corms 5-7.5cm (2-3in) deep. Containerised plants should be planted so that the top of the compost is level with the surrounding soil.
They can also be planted in containers of fertile, but well-drained, potting media, such as John Innes No.2, but, generally, they grow better planted in the soil.
- Water well in dry summers
- Apply a general purpose fertiliser such as blood, fish and bone or Growmore in spring