File:Arctotheca calendula plant5 (11767840663).jpg
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| Description | Introduced, cool-season annual, stemless or short-stemmed herb to 30 cm tall. Leaves form a prostrate rosette to 50 cm in diameter; they are spear shaped, serrated, deeply lobed; upper surface hairless to hairy; lower surface white felted. Flowerheads occur on unbranched peduncles. Ray florets are yellow, ligulate and sterile; disc florets are dark, tubular and bisexual. Germinates in autumn/winter; flowers in spring. A native of South Africa, it is strongly competitive weed of crops, pastures, lawns and disturbed areas (e.g. roadsides). Prefers lighter textured soils of reasonable fertility and where there is a lack of competition. Grazed by stock, but is of lower value than many good pasture species. Can cause nitrate poisoning in sheep and cattle on high fertility soils; taints milk; causes allergic skin reaction in horses and donkeys. Best managed using a number of methods: competition, grazing, mechanical, herbicides. Maintain dense, vigorous pastures and minimise soil disturbance. Needs to be controlled in year prior to sowing pastures; control is easiest at the seedling stage. Combined knockdown herbicides prior to sowing, selective post-sowing herbicides or manuring of crops and pastures can be highly effective for control. |
| Date | |
| Source | Arctotheca calendula plant5 |
| 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@N04/11767840663. 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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:17, 26 May 2015 | | 4,000 × 3,000 (6.91 MB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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