[peapod]

I immediately said lettuce...that doesnt help, I know that 

[monsta]

its not horseradish

this is horseradish

[mr Isaccs]

Nice
What a great patch of horseraddish Monsta
I can feel it burning my nostrils

[JayG]

Nice
What a great patch of horseraddish Monsta
I can feel it burning my nostrils

Try eating it! 

[mr Isaccs]

The hotter the better JayG 

[nobby]

nice pic of mature horseraddish the yonge leves are good in a spring salad  that is def horseraddish wate and see 

[GrannieAnnie]

I'm sure with the horseradish I used to have in the garden, the young leaves were just like the mature leaves only smaller, not a different shape!

It does look more like a salad leaf to me, but salad leaves don't grow from tubers!

We are not being much help are we?? 

[HilaryG]

It does look to me like Field Scabious or possibly Valerian, which both start off with round leaves and become serrated with age.

[savbo]

have you tried tasting the leaves? surely that's a pretty important clue if it's a herb? :blink:

[Flump]

 Could it be a Winter Radish?

[mr Isaccs]

Could it be Japanese horseraddish? I can't enlarge the picture so can't see it properly
Edit:- No it's not japanese horseraddish, I looked into that idea a bit more

[mr Isaccs]

It's certainly not young horseraddish as we know it though

[agapanthus]

Poppies....

Poppy

[Sideways]

I did taste it last year, when it was quite young and the leaves were small, it didnt taste of much back then but the plant is now developing and the leaves are much bigger. I will have another taste at the weekend.

No reply from who I beleived to be the original supplier. I also posted the image on the RHS forum, nobody has come up with an answer as yet.

Its quite frustrating, but fun, I guess... 

[mumofstig]

Agapanthus is probably right, as you can propagate the perennial poppies from root cuttings, could be planted with the herbs to use the seeds in cooking