File:Silybum marianum flowerhead4 (16141745071).jpg
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| Description | Introduced, cool season, annual herb up to 2.5 m tall. Leaves form a; rosette when plant is young. Leaves Leaves are variegated and spiny. Heads are large, solitary and terminal, with spiny bracts and purple tubular florets. Flowering is in spring. A native of S Eur. & N Afr, it is a weed of cultivation, pastures, roadsides and disturbed habitats; particularly common on volcanic, alluvial or other fertile soils and areas with a high nitrogen status such as stock camps. Competitive with pastures and crops; can form impenetrable thickets. Spray grazing is not recommended; plant can have a high nitrate content and wilted plants may cause livestock deaths if eaten. Spread by seed; paddock hygiene can help prevent spread by humans, livestock and vehicles. Isolated plants can be chipped; take care with possible nitrate poisoning as wilted plants readily eaten by livestock. Cultivation can be used as a first action if re-sowing to pasture; strong, competitive well managed, perennial pastures is the long-term solution. |
| Date | |
| Source | Silybum marianum flowerhead4 |
| Author | Harry Rose from South West Rocks, Australia |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/16141745071. It was reviewed on 26 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 17:32, 26 May 2015 | | 2,592 × 1,944 (695 KB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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