File:Senecio madagascariensis plant13 (16143326805).jpg
.jpg){kind=small}
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,000 × 1,500 pixels.
Original file (2,000 × 1,500 pixels, file size: 1.39 MB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description | Introduced, yearlong-green, annual or biennial, erect herb to 70 cm tall. Leaves are variable, mostly 2-8 cm long and lanceolate or elliptical, but never deeply dissected. Fllowerheads are loose clusters of yellow heads, each to 2 cm diameter. There are usually 13 (12-15) outer (petal-like) ray flowers and one row of 20-21 bracts. Flowering is year-round, but mostly from autumn to spring. A native of southern Africa, it is a common weed of pastures and disturbed sites. Most prolific on lighter-textured, acid, well-drained, low to medium fertility soils. Seeds are spread long distances by wind. More abundant where pastures are overgrazed or disturbed. Contains toxins that cause irreversible liver damage. Poisoning is usually chronic, leading to ill-thrift and eventually death if stock continue to graze it. Horses and cattle (especially young stock) are most susceptible, sheep less so, and goats the least. Not very palatable for cattle or horses, but goats and sheep will seek it out. More likely to be eaten if stock graze after slashing, as they cannot discriminate between fireweed and pasture. Best controlled using a number of methods, including strong pastures, grazing and herbicides. A dense, well-managed pasture can limit fireweed establishment, plant size and seed production. Hand pulling and bagging is very effective for controlling small/light infestations. Herbicides are most effective if used on smaller plants, preferably before flowering. |
| Date | |
| Source | Senecio madagascariensis plant13 |
| Author | Harry Rose from South West Rocks, Australia |
Licensing
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/16143326805. It was reviewed on 26 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:31, 26 May 2015 | | 2,000 × 1,500 (1.39 MB) | Amada44 | Transferred from Flickr via Flickr2Commons |
File usage
The following page uses this file:
.jpg){kind=link}