Anyone know what this plant is?

[megcymraeg]

I found this growing in my ponies field ,I need to find out what it is in case it's poisonous

[NannyMarmalade]

Does it smell?
It looks like curry plant or lavender.
It could be knapweed which is poisonous.

[Gatekeeper]

rub the leaves and describe the smell- looks like a garden escape