IF I SAY garden maintenance, you probably think of work—of getting out the pruners and hedge trimmers and such, and subduing any overenthusiastic plants, getting them back into bounds. But what if we thought of maintenance as an expression of creativity, instead of merely restraint—as part of the art of garden-making? What if we figured it into our design decisions right from the start? Particularly as our gardens shift in a more ecological direction and become more naturalistic, that adjustment and approach seems especially important. Ongoing creative maintenance is our topic today with Noel Kingsbury and Annie Guilfoyle, hosts of the popular Garden Masterclass series of workshops and webinars. Annie…