Beavers, I suspect, are the culprits that gnawed two buttonbushes (Cephalanthus occidentalis, below) and a dappled willow (Salix integra ‘Hakuro nishiki’) to the ground this week. I haven’t seen a beaver, and it’s too swampy to get back to the farm pond to see the twig hut to confirm it, but it’s gotta be. As…