Often called a "living steel nail," Vetiver is the definitive solution for holding steep land together. This extraordinary grass possesses a massive vertical root system that can penetrate 3-4 meters deep, creating an impenetrable underground barrier against erosion, all while remaining non-invasive thanks to its sterile seeds.
Vetiver Grass (*Chrysopogon zizanioides*). Native to India, this perennial bunchgrass grows in dense, erect clumps. Unlike other grasses that spread via lateral runners, Vetiver's root system grows straight down, reaching incredible depths, making it the #1 bio-engineering tool for soil stabilization worldwide.
In Permaculture, it is planted on "contour lines" (Keyline design) to stop rainwater runoff, forcing it to infiltrate the soil and trapping sediments and nutrients that would otherwise be lost to erosion.
Aromatic Note: The roots contain a thick, earthy, and woody essential oil, famous in high-end perfumery and aromatherapy for its grounding and relaxing properties.
| Scientific Name | Chrysopogon zizanioides (formerly Vetiveria) |
| Format | 11x11cm Pot or Bare Root Slip |
| Hardiness Zone | Zones 9-11 (Loves heat) |
| Light Preference | Full Sun |
| Water Needs | Adaptable (Tolerates drought and flood) |
| Mature Size | 1.5m Height (Foliage) |
1. Contour Hedges: Plant slips 10-15cm apart on contour lines to create a natural terrace that traps soil and water.
2. Phytoremediation: Ideal for planting near greywater outlets or septic fields, as it absorbs excess nutrients and phosphates.
3. Termite Repellent: Compounds in the roots (vetiverol) naturally repel termites and soil nematodes.
Vetiver needs full sun to grow vigorously. If planting "slips" (bare root), keep the soil very moist for the first few weeks until roots establish.
Trim the foliage down to 30-50cm once a year (preferably in late winter) to stimulate root growth and generate mulch material.