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Senecio squalidus, known as Oxford ragwort, [6] is a flowering plant in the daisy family Asteraceae. It is a yellow-flowered herbaceous plant, native to mountainous, rocky or volcanic areas, that has managed to find other homes on man-made and natural piles of rocks, war-ruined neighborhoods and dry-stone walls .
Herbicides designed to control broadleaf plants are effective for controlling Senecio vulgaris in cereals and forage grasses but also will "control" broadleaf crops, such as mint, forage legumes, [54] strawberries, [60] carrots [61] and all other non-grass crops. There is also evidence that the plant develops an immunity to the chemical control ...
Common names include ragwort, common ragwort, [4] stinking willie, [5] tansy ragwort, benweed, St. James-wort, stinking nanny/ninny/willy, staggerwort, dog standard, cankerwort, stammerwort. In the western United States it is generally known as tansy ragwort , or tansy , though its resemblance to the true tansy is superficial.
A ragwort plant can produce around 30,000 to 120,000 seeds but as this is a native plant in the UK these would on average only create one new plant. It can be toxic to livestock if it is contained in hay and it contains several kinds of Pyrrolizidine alkaloid which can, if the dose is high enough, cause liver damage .
Senecio squalidus — Oxford ragwort; Senecio trapezuntinus; Senecio triangularis — arrowleaf groundsel; Senecio tropaeolifolius — false nasturtium; Senecio vaginatus; Senecio vernalis — eastern groundsel; Senecio viscosus — sticky ragwort; Senecio vulgaris — common groundsel, old-man-in-the-spring; Formerly in Senecio. Brachyglottis ...
Senecio squalidus, Oxford ragwort; Senecio viscosus, sticky ragwort; Certain members of the genus Jacobaea (a segregate of Senecio): Jacobaea vulgaris, (common) ragwort or, only in the USA tansy ragwort, a very common wild flower in Europe, widely naturalised elsewhere; Jacobaea aquatica, water ragwort, marsh ragwort; Jacobaea erucifolia, Hoary ...
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