Watsonia meriana var. bulbillifera
Origin: South Africa
Regional Pest Management Plan (RPMP) status
- Not a legally declared pest
Perennial, clump-forming herb < 2 m tall. Corms are < 8 cm in diameter, stout and fibrous. Leaves are sword-shaped. Flowers are tubular, < 10 cm long, red/orange/pink/cream and borne on a spike in September-December. Cormils are shiny, red/brown and borne in clusters on floral stems.
What you need to know
Although bulbil watsonia is not a legally declared pest plant, it may still be invasive in some situations. Consider lower risk alternatives for your garden, such as native plants.
Scrub, riparian margins, coastal dunes, wetland, wasteland, urban areas, roadsides.
Seed set is rare. Vegetative spread from corms and cormils, dispersed by water and soil movement. Human-mediated dispersal through dumping of garden waste and movement of contaminated soil, machinery and vehicles.
Impact on environment
Forms dense mats of corms, suppressing native seedling recruitment.
Follow up treated areas 3 times per year. Encourage natural regeneration of native plants or replant treated areas where possible after 2-3 treatments to establish dense ground cover and minimise reinvasion.
Method: Dig out.
Plant parts requiring disposal: Underground corms and aerial corms.
Disposal options: Rot corms in covered water barrel or remove to greenwaste or landfill if practical.
Biocontrol is currently not available for this species.
Community agrichemical control recommendations
No qualifications: Foliar spray with 150ml glyphosate green per 10L of water.
Basic Growsafe certified: Foliar spray with 3g metsulfuron-methyl plus 150ml glyphosate per 10L of water.
Certified Handler/Experienced agrichemical user: Foliar spray with 3g metsulfuron-methyl plus 150ml glyphosate per 10L of water and 10ml penetrant.
Caution: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.