Beautiful, But Poisonous, Yellow Common Tansy At Fort Hill On Cape Cod

If you park in the first lot at Fort Hill, you can see this beautiful Common Tansy by the side of the lot. I have never seen it before, so it was a big treat to take some photographs and then do some research.

Common Tansy are tiny, yellow button-like flowers which grow in flat-topped clusters. They grow to about 3′ erect and are colony-forming. The leaves are dark green and fern-like and aromatic. The scent is similar to that of camphor with hints of rosemary. They grow from July to September.

Caution: They are poisonous so observe them from a distance! The leaves and flowers are toxic if consumed in large quantities; the volatile oil contains toxic compounds including thujone which can cause convulsions and liver and brain damage.

 

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