Ants nest in my Digitalis
My digitalis was doing splendidly but recently it has started looking rather sorry for itself.
On closer inspection it is teeming with ants who are all over stems and right down in the base of the leaves.
It looks like they may have a nest in there.
I have hosed them off but they return within a short while.
Is this a common problem? Can anything be done that wont wipe out the plant too?
Grateful for any advice.