I usually shear C. verticillata after the first bloom, but they aren’t that tall. Are they arranged so that you can you try shearing some before and some after without it looking funny?
Welcome! I’m Margaret Roach, a leading garden writer for 25 years—at ‘Martha Stewart Living,’ ‘Newsday,’ and in three books. I host a public-radio podcast; I also lecture, plus hold tours at my 2.3-acre Hudson Valley (NY) Zone 5B garden, and always say no to chemicals and yes to great plants.