When to trim lavender
I planted a row of lavender hidcote about a year ago. It’s filled out a bit towards the low hedge that I want. I’ve been told to trim it low but still into green stems after the flowers are finished, so that it can put on fresh growth and look good for the winter. The thing is it’s still got flowers on it in mid-November - I dead headed it for a while. Should I have trimmed by a certain time regardless of remaining flowers? Is it too late?