This was my first year for hyssop blue fortune and montauk daisy, both did great but not sure if I should cut back now or wait til spring. I am in ZIP code 19054, I believe still considered zone 4b-5. Thanks in advance for any help.
I am in zone 7 -- I grew blue fortune (before hubby had a bad reaction to bee sting) and always cut it to the ground in winter. It made it just fine and was huge by the following fall. It smells so great when it rains - licorace. I loved that thing!
I always leave stuff over the winter and trim in the spring, but it's really personal preference. Both of them are herbaceous, so they'll put out new growth from the base in the spring regardless of what you do with the dead stalks.