Vetiver, or khus, is a tall, densely clumping perennial grass famous for its fragrant, deep-growing roots used for cooling khus screens, perfumery and erosion control. It forms stiff, upright clumps of narrow grey-green blades and produces a remarkable mass of aromatic roots that bind soil and resist drought. Non-invasive and sterile in most cultivated forms, it is widely planted on slopes, bunds and field edges to stop soil erosion and conserve water. The roots are woven into cooling mats and curtains and distilled into vetiver oil. Tough and adaptable, vetiver is a multipurpose grass ideally suited to Indian conditions.
Specifications
| Family |
Poaceae |
| Native region |
Indian subcontinent |
| Mature height |
1-2 m |
| Mature spread |
Tight non-spreading clumps |
| Growth rate |
Fast |
| Foliage |
Narrow, stiff, upright grey-green blades |
| Flower colour |
Brownish-purple flower spikes |
| Flower season |
Post-monsoon to winter |
| Climate zone |
Tropical, subtropical |
Care guide
| Sunlight |
Full sun |
| Watering |
Low once established; very drought tolerant |
| Soil / mix |
Adaptable; tolerates poor and wet soils |
| Temperature |
15-45 C; very heat tolerant |
| Humidity |
Adaptable |
| Fertilizer |
Minimal; light feed if soil is very poor |
| Pruning |
Cut back to refresh clumps as needed |
| Repotting |
Divide clumps to propagate |
| Propagation |
Division of clumps (slips) |
| Pests & problems |
Largely pest- and disease-free |
| Toxicity / safety |
Non-toxic; roots aromatic and useful |
| Difficulty |
Easy |
Uses
Grown for its aromatic roots used in khus cooling screens, perfumery and oil, and widely planted for soil and water conservation. An excellent erosion-control grass on slopes and bunds.
Growing tips
In India, plant vetiver slips in full sun along slopes or field bunds; it establishes fast and becomes extremely drought tolerant. Use sterile clumping cultivars so it controls erosion without spreading or becoming weedy.