Vetiver Grass in Dominica

Vetiver Grass (Chrysopogon zizanioides), locally referred to simply as Vetiver or sometimes Kus Kus, is a perennial bunchgrass of the family Poaceae that plays a vital role in the ecological and artisanal landscape of the Commonwealth of Dominica. Known for its extraordinary root system and aromatic properties, Vetiver is a primary tool for soil conservation and a traditional raw material for the island’s world-renowned craft industry. In the national context of “Nature Island,” this grass is a strategic asset for mitigating the effects of tropical weather on Dominica’s steep volcanic terrain.

Botanical Description and Growth Habitat

Vetiver is a non-invasive, sterile grass characterized by tall, stiff stems and long, narrow leaves that can reach heights of up to 1.5 meters. Unlike most grasses that spread via surface runners, Vetiver grows in dense, vertical clumps.

• The Root System: The most significant feature of Chrysopogon zizanioides is its massive, fibrous root system, which grows vertically downward rather than horizontally. In the loose, volcanic soils of Dominica, these roots can reach depths of 3 to 4 meters, acting as living soil nails.
• Habitat: Vetiver thrives in a wide range of Dominican microclimates, from the humid coastal regions to the rain-drenched interior. It is exceptionally resilient, able to survive both prolonged drought and total submersion during heavy flooding.

Ecological Role: Soil Conservation and Slope Stabilization

Due to Dominica’s rugged terrain and high annual rainfall, soil erosion and landslides are persistent challenges. The Ministry of Agriculture and the Forestry, Wildlife & Parks Division have historically promoted Vetiver as a bio-engineering solution.

• Hedge Rows: When planted in tight rows along the contours of a hill, Vetiver forms a botanical barrier that slows down runoff and traps sediment. This filter effect prevents fertile topsoil from being washed into ravines and rivers.
• Infrastructure Protection: It is frequently planted along the shoulders of major roads, such as the Imperial Road and the Dr. Nicholas Liverpool Highway, to stabilise embankments and prevent road failures during hurricane seasons.

The Vetiver Craft Industry

Dominica is famous throughout the Caribbean for its high-quality Vetiver handicrafts, a tradition deeply rooted in the villages of the southeast, particularly Grand Bay, Pichelin, and Petite Savanne.

• Harvesting and Preparation: The roots are excavated, cleaned, and dried in the sun. The long, sturdy leaves are also harvested, dried, and sometimes bleached to create weaving material.
• Products: Artisans utilise the aromatic roots to create scent bundles for linen closets, while the leaves are woven into durable floor mats, rugs, hats, and baskets. Vetiver mats from Dominica are highly sought after for their earthy fragrance, which can last for years.
• Economic Impact: The craft provides a sustainable livelihood for rural cooperatives and individual weavers, with products sold at the Old Market in Roseau and exported to regional boutiques.

Traditional and Medicinal Uses

In Dominican herbal medicine traditions, Vetiver is valued for its calming and antiseptic properties.

• Aromatherapy: The essential oil extracted from the roots, often called the “Oil of Tranquility”, is used in local soaps and perfumes.
• Bush Medicine: A decoction made from the roots is traditionally used to treat heat stroke or as a cooling tea to settle the nerves.
• Household Use: Dried roots are often placed among clothes to act as a natural moth repellent and to infuse garments with a clean, woody scent.

Market Availability and Pricing

While Vetiver grass grows wild, the processed materials and finished goods are primary market commodities.

• Raw Materials: Bundles of dried Vetiver roots or prepared straw for weaving are available through craft cooperatives, usually priced between $15.00 EC and $30.00 EC, depending on the weight.
• Finished Crafts: Hand-woven Vetiver floor mats are premium items, priced from $60.00 EC for small doormats to over $500.00 EC for large, custom-sized area rugs.
• Essential Oils: Small vials of locally distilled Vetiver oil are sold in specialty shops in Roseau for approximately $25.00 EC to $40.00 EC.