Up on Hawthorn Hill Garlic harvest is one of my favorite routines William Cobbett published his classic on gardening, “The English Gardener,” in 1829. I turn to it often not so much for its gardening advice, but for Cobbett’s often curmudgeonly, sometimes philosophical, comments about certain plants and how to go about dealing with them. Interestingly, his section on what he describes as “garlick,” is short and to the point; plant it, dig it up when ready and hang it to dry. That’s it. It is garlic harvesting time here, an early summer routine I always look forward to. I…