How to Grow Vetiver Grass
Chrysopogon zizanioides
Vetiver is a non-invasive clumping grass grown for its extraordinary deep roots, which reach 3 m and make it the world's leading erosion-control plant. Plant in full sun and well-drained soil in spring after all frost risk has passed. Space 30-50 cm apart for erosion-control hedgerows. It establishes slowly in the first year but is vigorous once rooted. Cut back to 10-15 cm in early spring. In cool temperate climates, mulch the crown heavily in autumn — it tolerates light frosts but prolonged hard freezes will kill it. The fragrant roots are harvested in traditional distillation for perfumery.
Yearly Lifecycle
Care Essentials
Light balanced feed in spring when establishing in the first year. Once established, vetiver is self-sufficient and needs no regular feeding.
Watch For
- Frost damage on young plants (protect below -5C)
- Slow establishment in cool climates
Companions
Lemongrass, Ylang Ylang, Comfrey, Pineapple Sage
Care Requirements
Light
Full sun essential
Requires full sun for vigorous growth and deep rooting. Will not perform well in shade or partial shade.
Watering
Drought-tolerant once established
Deep roots make vetiver extremely drought-tolerant once established. Water regularly in the first season to encourage deep root development. After year one, supplemental watering is rarely needed.
Fertilizing
Light feed in year one only
A light balanced fertiliser in spring of the first year aids establishment. After that, no regular feeding is needed — vetiver thrives in poor soils.
Pruning
Cut back to 10-15 cm in early spring
Cut back to 10-15 cm above ground in early spring. In frost-prone areas, wait until all frost risk has passed to protect the crown. Old growth can be left through winter as frost protection.
Mulching
Heavy crown mulch in autumn in cool climates
In temperate climates, mound straw or dry bracken over the crown in late autumn. Remove in spring once frost risk has passed.
Growing Tips
Plant in rows for erosion control
For slope stabilisation, plant in dense rows across the slope. Roots reach 3 m deep within 2-3 years, anchoring soil effectively on even steep gradients.
Non-invasive — safe near waterways
Unlike many grasses, vetiver does not spread by rhizomes or stolons. It forms a tight clump and will not colonise surrounding areas.
Mulch crown before winter
In cool climates, mound straw or bracken over the crown in late autumn. The roots are frost-hardy but the growing point needs protection in prolonged hard frosts.
