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.