Herbs Tansy & Wormwood

Hi

Has anybody ever grown these two plants ? (Tansy & Wormwood)

I have obtained seeds and am going to try growing them as I have seen Tansy in a cake recipe and Wormwood (Absinthe-Fav tipple) in a seed cat.

I have read both are repellents of flying insects, but Tansy is not to be grown near grazing animals.

Can anybody advise as to why Tansy may affect grazing animals ? and offer any advise ?

Many thanks.

PS No grazing animals near my garden.

Thanks, there was also a warning with the tansy to avoid use in pregnancy and consult a herbalist, you have explained why.

Growing it more as a plant really, doubt I will get round to eating it in a cake, but if it's grows, you never know.

It's an old recipe from yonks back, so maybe before they were aware of the side effects. I doubt building a still to make Absinthe is an option either, Police station is a bit too local ! 

I actually find tansy has an unpleasant smell, but the flowers look pretty 

I believe wormwood can adversely affect plants growing near it too!

Apparently the roots exude something that inhibits other plants growing. A lot of plants do this.

It could still be worth growing to use foliage as an insect repellant. I'd like to try it out on carrot root fly.