Is that plant?
People would guess, broccoli? Caulilower? (seriously...I am not making that up....)
It's Lovage. An herb. I bought one little plant a few years ago, and planted it in my back yard near Charlie's bedroom window. It has since self seeded in several spots in my yard, and cheerfully grows to amazing heights.
This is the perfect spot for it, several plants are growing tall and provide a little privacy for me when I sit on my patio at night with my wine and book, or in the morning with my coffee and newspaper.
Here is the info from the sign:
I haven't tried it in any recipes yet, but I think I may have to hunt some down and see what I can come up with. If you are looking for an unusual plant to add some fun to your garden, look for it at places that sell a variety of herbs.
Just remember, you have been warned about it's self seeding capabilities....