How to Grow Cape Thatching Reed
Elegia tectorum
Cape Thatching Reed is a striking architectural restio from South Africa that earns its place in any garden with a year-round silhouette of dark green culms and feathery whorled branchlets. Plant in full sun in well-drained soil, spacing plants 90-120 cm apart. It establishes slowly in year one but builds into a bold, bamboo-like clump by year three. Small dark brown flower spikes appear at the cane tips in summer. The plant is largely self-maintaining — simply remove dead culms at the base in early spring and apply a light mulch. In colder gardens protect the crown over winter. Avoid waterlogged soil and heavy feeding, both of which weaken the plant.
Yearly Lifecycle
Care Essentials
Rarely needed. A light top-dress of low-nitrogen fertiliser in spring is sufficient. Avoid rich feeding which produces weak, floppy growth.
Watch For
- Vine weevil on roots
- Slugs on young shoots in spring
- Root rot in waterlogged soil
Companions
Agapanthus, Phormium, Kniphofia, Libertia
Care Requirements
Light
Full sun
Requires full sun for best form and density. In shade the culms become lax and floppy. South or west-facing positions are ideal.
Watering
Moderate, well-drained
Water regularly during the first year to establish. Once settled, it is reasonably drought-tolerant but appreciates occasional deep watering in prolonged dry spells. Never waterlog.
Fertilizing
Light low-nitrogen feed in spring
A light top-dress of low-nitrogen fertiliser in spring is sufficient. Avoid rich feeding which produces weak, floppy growth. Compost mulch provides gentle nutrition.
Pruning
Remove dead culms in early spring
Remove clearly dead or brown culms at the base before new growth begins. Do not cut the whole plant back hard. Tidy loose brown sheaths from nodes through the season.
