Horse-Radish (Armoracia rusticana)

Horse-Radish (Armoracia rusticana)

Observation - Horse-Radish (Armoracia rusticana) - UK and Ireland. Description: This looks like a brassica but I've no idea what it is. Growing under a hedge beside a busy road. Edit: Changed to match Cicuta's ID. Many thanks. It's a plant we don't see in Scotland.

This looks like a brassica but I've no idea what it is. Growing under a hedge beside a busy road.
Edit: Changed to match Cicuta's ID. Many thanks. It's a plant we don't see in Scotland.