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tansy

Senecio jacobaea

Photo by KarenSaxton
Published on Project Noah
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43.1771, -124.188

Field Notes

Description:

Considered a noxious weed. Toxic to most livestock

Reference Links:

Information about tansy ragwort

Species ID Suggestions

Tansy ragwort

Senecio jacobaea

Reference Link
shebebusynow
1

Comments (9)
KarenSaxton
I saw them as recently as 5 years ago, and you're right, the tansy seems to have spread since then. Now all I see are the similar centocha moth
shebebusynow
A few years ago, they were hot on using cinnabar moths to control tansy ragwort (see http://en.wikipedia.org/wiki/Cinnabar_moth), and it seemed like I saw less tansy then. Haven't seen any of the caterpillars lately, though. Guess they died out, as they were supposed to.
KarenSaxton
heh, except silver leaves look even more silver. I have two cameras made by Olympus. One I use in my workplace because it is far superb for low light photograpy. The other I use for it's generous zoom capability. Both also do great macros
Behn
Bah! Low light photography ruining my identification skills!
KarenSaxton
Check the link I posted, and the one posted by shebebusynow. Senecio vulgaris is another common invasive here, and it's kind of nice to know it's name. Really enjoying project noah... the silvery leaves are from the low light photography and the bit of reflected dappled sunlight
Behn
hmm, the leaves in the last pic look real silvery. what is commonly called Tansy Ragwort is Jacobaea vulgaris, the cousin of Dusty Miller.
KarenSaxton
It doesn't have silvery leaves at all. I've trying to look it up, but this computer doesn't have a pdf on it(and not enough resources to deal with one - adobe was messing with something). All the noxious weed resources call it tansy ragwort, but no latin name
Behn
Actually, the silvery leaves lead me to believe that it isn't tansy ragwort or tansy, but dusty miller.
Behn
I know some people call this "tansy", I try to make sure to differentiate it from Tanacetum vulgare, more commonly called "tansy".
Photographed
PublishedAugust 25, 2011

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