I didn't do anything to mine last winter and it came back fine. I cut off the really dead parts in the spring and the plants just took off with new growth.
same here. and I cover it with leaves during the coldest of winter, in the
spring I cut it back but careful not to cut back too far into the main woody stock,I also scratch in the soil some Epsom salt in the
spring it loves it and will thank you for it,
there are a lot of different kinds of lavender,,,,, and some do not come back,, for your
zone,,,,,,,,, do you know which kind you have??