Invasiveness Assessment - Pampas lily-of-the-valley (Salpichroa origanifolia) in Victoria (Nox)
Back | Table | Feedback
Plant invasiveness is determined by evaluating a plant’s biological and ecological characteristics against criteria that encompass establishment requirements, growth rate and competitive ability, methods of reproduction, and dispersal mechanisms.
| Each characteristic, or criterion, is assessed against a list of intensity ratings. Depending upon information found, a rating of Low, Medium Low, Medium High or High is assigned to that criterion. Where no data is available to answer a criterion, a rating of medium (M) is applied. A description of the invasiveness criteria and intensity ratings used in this process can be viewed here. |
The following table provides information on the invasiveness of Pampas lily-of-the-valley
A more detailed description of the methodology of the Victorian Weed Risk Assessment (WRA) method can be viewed below:
Victorian Weed Risk Assessment (WRA) method (PDF - 630 KB)
Victorian Weed Risk Assessment (WRA) method (DOC - 1 MB)
To view the information PDF requires the use of a PDF reader. This can be installed for free from the Adobe website (external link).
Common Name: Pampas lily-of-the-valley
Scientific name: Salpichroa origanifolia
| Question | Comments | Reference | Rating |
| Establishment | |||
| Germination requirements? | Seeds germinate from spring to early summer. | P & C (1992) | MH |
| Establishment requirements? | Establishes under moderate canopy/litter cover (e.g. in woodlands and sclerophyll forests). | Carr et al (1992) | MH |
| How much disturbance is required? | Establishes as an environmental weed minor disturbed natural ecosystems (e.g. heathland/heathy woodland, sclerophyll forest, riparian vegetation). | Carr et al (1992) | MH |
| Growth/Competitive | |||
| Life form? | Perennial herb-aerial growth dies in autumn and new growth develops in late winter and spring therefore geophyte. | P & C (1992) | ML |
| Allelopathic properties? | None described. |  | L |
| Tolerates herb pressure? | Is grazed. However, assured to recover quickly: 1- has a thick, woody, extensive rootstock: 2 – not mentioned by P & C (1992) as control technique. | P & C (1992) | MH |
| Normal growth rate? | “Once firmly established (it) smothers all other vegetation killing large shrubs and trees”. | P & C (1992) | H |
| Stress tolerance to frost, drought, w/logg, sal. etc? | Tolerates drought. | P & C (1992) | L |
| Reproduction | |||
| Reproductive system | Reproducing from roots and by seed. | P & C (1992) | H |
| Number of propagules produced? | Fruit containing several seeds. Has numerous stems trailing to 3 m long. ~ 100 berries per plant x 20 seeds per berry = at least 2,000 seeds per plant. | P & C (1992) | H |
| Propagule longevity? | ? | | M |
| Reproductive period? | Perennial herb. | | M |
| Time to reproductive maturity? | Due to the rapid growth rate of this perennial herb, assumed to be around two years after germination. | P & C (1992) | MH |
| Dispersal | |||
| Number of mechanisms? | Roots – cultivation equipment, road graders and garden refuse. Seeds – contaminated equipment, clothing, mud birds and other animals. | P & C (1992) | H |
| How far do they disperse? | Above mechanisms could transport many seeds > 200 m / 1 km. | | H |
Feedback
Do you have additional information about this plant that will improve the quality of the assessment?
If so, we would value your contribution. Click on the link to go to the feedback form.
© State of Victoria (Agriculture Victoria) 1996 - .
This work, Victorian Resources Online, is licensed under a Creative Commons Attribution 4.0 licence. You are free to re-use the work under that licence, on the condition that you credit the State of Victoria (Agriculture Victoria) as author, indicate if changes were made and comply with the other licence terms.
The licence does not apply to ‘branding’ or some ‘images or photographs’ that may be owned by third parties. We ask you to seek prior approval to use images using the VRO feedback form. Access to higher quality images can also be provided on request.
This page was last updated on .