The Common Ragwort is a biennial yellow angiosperm which can grow to 30-100 cm high.

Flowers York groundsel has showy flower-heads especially when compared to its Common ragwort parent.

Common ragwort (Senecio jacobaea) (n.b., this weed is poisonous to livestock.

Common ragwort (Senecio jacobaea) which in some regions is called "tansy ragwort"

I was mistaken on two counts: I said that it was illegal to have ragwort (ie common ragwort) on land.

In the United Kingdom, Common Ragwort (Senecio jacobaea) is one of the five plants named as an injurious weed under the provisions of the Weeds Act 1959.

Examples of herbaceous biennials include carrot, parsnip and common ragwort; herbaceous perennials include potato, peony, hosta, mint, most ferns and most grasses.

It received Royal Assent on 16 July 1959, and aims to prevent the spread of the Broad Leaved Dock, Common Ragwort, Creeping Thistle, Curled Dock and the Spear Thistle.

Cankerwort, Common Ragwort, Dog Standard, European Ragwort, Hierba Cana, Hierba de Santiago, Ragweed, Ragwort, Senecio jacobaea, Séneçon Jacobée, Staggerwort, Stammerwort, St. James' Wort, Stinking Nanny.

There isn't enough information available to understand how tansy ragwort works.

Some people apply tansy ragwort directly to the skin for muscle and joint pain.

Stay on the safe side and avoid using any tansy ragwort preparation if you have liver disease.

At this time there is not enough scientific information to determine an appropriate range of doses for tansy ragwort.

There isn't enough information to know if it's safe to apply tansy ragwort to unbroken skin.

If you have allergies, be sure to check with your healthcare provider before taking tansy ragwort.

Some chemicals that form when the liver breaks down tansy ragwort can be harmful.

Despite serious safety concerns, tansy ragwort is used to treat cancer, colic, wounds, and spasms.

Don't confuse tansy with tansy ragwort, which has been fatal to cows that have eaten it growing nearby.

Common ragwort (Senecio jacobaea) which in some regions is called "tansy ragwort"

Tansy Ragwort: native to Eurasia.

It's also UNSAFE to apply tansy ragwort to broken skin.

The dangerous chemicals in tansy ragwort can be absorbed quickly through broken skin and can lead to dangerous body-wide toxicity.

Liver disease: There is concern that the hepatotoxic PAs in tansy ragwort might make liver disease worse.

Be careful not to confuse tansy with tansy ragwort (Senecio species) and other plants generically referred to as "tansy."

Medications that cause the liver to break down tansy ragwort might enhance the toxic effects of chemicals contained in tansy ragwort.

At times, it resembles a mix of Edward Gorey and "Jabberwocky" - the cinnabar moth caterpillar, for example, helps control "the noxious tansy ragwort weed."

In the western US it is generally known as Tansy Ragwort, or "Tansy", though its resemblance to the true tansy is superficial.

It's also UNSAFE to use tansy ragwort preparations that might contain hepatotoxic PAs if you are breast-feeding.

Ragweed (TANSY RAGWORT)

(TANSY RAGWORT) Stinking Nightshade.

Seven species of noxious weeds have been identified within the watershed: three species of thistles, Medusahead Rye, Scotch Broom, St. Johnswort, and Tansy Ragwort.

There's a lot of concern about using tansy ragwort as medicine, because it contains chemicals called hepatotoxic pyrrolizidine alkaloids (PAs), which may block blood flow in the veins and cause liver damage.

There are environmental benefits of meat-producing small ruminants for control of specific invasive or noxious weeds (such as spotted knapweed, tansy ragwort, leafy spurge, yellow starthistle, tall larkspur, etc.) on rangeland.