Peruvian primrose
Ludwigia peruviana
Biosecurity Queensland must be contacted within 24 hours of sighting, call: 13 25 23.
family
Onagraceae
origin
Exotic
declaration
Category 1 Restricted Matter (Biosecurity Act 2014)
Category 1 – must be reported to a Queensland Government inspector within 24 hours
Common names
Peruvian primrose, Peruvian water primrose, Ludwigia, Peruvian primrose bush, Water primrose.
State Category: Schedule 1 - Prohibited, Biosecurity Queensland must be contacted within 24 hours 13 25 23., Biosecurity Queensland Must attend site before any control measure is administered, advice will be provided to the land holder at this time., A large long-lived wetland shrub much-branched stems usually growing 2-4 m tall its younger stems and leaves are hairy. Its alternately arranged leaves (5-12 cm long and 1-3 cm wide) have prominent veins. Its flowers (2-4 cm across) are borne singly and have four or five bright yellow petals and four or five persistent sepals. Its reddish or brownish fruit (10-25 mm long and 6-10 mm wide) are four-angled and hairy.
Impact
Impact
Biosecurity Queensland Must attend site before any control measure is administered, advise will be provided to the land holder at this time , Peruvian primrose (Ludwigia peruviana) is regarded as an environmental weed in New South Wales and as a potential environmental weed or "sleeper weed" in many other parts of Australia. During a recent survey, it was listed as a priority environmental weed in at least one Natural Resource Management region. While currently relatively localised in central New South Wales, Peruvian primrose (Ludwigia peruviana) is thought to have the potential to become a major aquatic weed in eastern AustraliaPeruvian primrose (Ludwigia peruviana) is mainly naturalised around swampy lake margins in and around Sydney. This species has become dominant in the Botany Wetlands, replacing much of the former vegetation of this series of shallow urban swamps and lakes. It is also considered to be a threat to endangered freshwater wetlands throughout the Sydney Basin bioregion. In recent years the distribution of this species has begun to expand. It has been found in Hornsby Shire, in northern Sydney, and a few outbreaks have also been recorded along drainage channels, creeks, and near lagoons in the Gosford and Port Stephens areas in the New South Wales Central Coast region.This species forms dense, monotypic stands in shallow slowly-flowing waterways, as well as in marshy areas, riparian vegetation and around the margins of still waterbodies. Once established, it sprawls out into the water surface and can form floating islands of vegetation. Its tall dense growth excludes most other vegetation and reduces light levels reaching the water surface, eventually replacing native vegetation and reducing biodiversity in invaded areas. It also causes more wide-ranging ecological damage, through increased sedimentation and accumulation of organic material. This results in the deoxygenation of the water column and can lead to the death of aquatic animals.
Location
Location
Characteristics
Characteristics
Similar Species
Similar Species
Biosecurity Queensland Must attend site before any control measure is administered, advise will be provided to the land holder at this time , Peruvian primrose (Ludwigia peruviana) is regarded as an environmental weed in New South Wales and as a potential environmental weed or "sleeper weed" in many other parts of Australia. During a recent survey, it was listed as a priority environmental weed in at least one Natural Resource Management region. While currently relatively localised in central New South Wales, Peruvian primrose (Ludwigia peruviana) is thought to have the potential to become a major aquatic weed in eastern AustraliaPeruvian primrose (Ludwigia peruviana) is mainly naturalised around swampy lake margins in and around Sydney. This species has become dominant in the Botany Wetlands, replacing much of the former vegetation of this series of shallow urban swamps and lakes. It is also considered to be a threat to endangered freshwater wetlands throughout the Sydney Basin bioregion. In recent years the distribution of this species has begun to expand. It has been found in Hornsby Shire, in northern Sydney, and a few outbreaks have also been recorded along drainage channels, creeks, and near lagoons in the Gosford and Port Stephens areas in the New South Wales Central Coast region.This species forms dense, monotypic stands in shallow slowly-flowing waterways, as well as in marshy areas, riparian vegetation and around the margins of still waterbodies. Once established, it sprawls out into the water surface and can form floating islands of vegetation. Its tall dense growth excludes most other vegetation and reduces light levels reaching the water surface, eventually replacing native vegetation and reducing biodiversity in invaded areas. It also causes more wide-ranging ecological damage, through increased sedimentation and accumulation of organic material. This results in the deoxygenation of the water column and can lead to the death of aquatic animals.
