Sorry. No experience with it though I've seen it in the seed catalogs too. Wonder if it tastes rather like lovage, which is like celery to the max?

FataMorgana

I grew it this year. I started the seeds inside and then planted in my garden. It looks like parsley and tastes like parsley with a hint of celery. I bought the seeds at target. I definitely would grow them again.

I also grew this last year. My mistake was keeping them in large pots. They grow HUGE... It does taste as it says, but seems to prefer the ground. Even 5 gallon pots it quickly got rootbound, though takes significant abuse. It's vey interesting herb, just quite large (large roots)... Some year I may try again. Keep us updated, I liked it...

Amy

Sounds a lot like lovage.