What herb is this? It grows wildly in my garden.

I'm not very good at IDs but might it be Sweet Cicely?

Hi, Scottish. Thank you for comment. Do you know another name? My google translator didn t show it to me.

It really looks like that...:-)
http://www.perennials.com/plants/myrrhis-odorata.html
But I cannot find slovak equivalent. It is not fennel.

Yes, the myrrhis odorata is what I thought it was. Maybe put it on the question page for more knowledgeable members to see Kat.