by Larry Hodgson October 27, 2018 1 Gardening Grafting Plant diseases Pruning Trees Wart-like Growths on a Willow Grown galls on a grafted willow (Salix purpurea ‘Gracilis’). Source: Danielle Dion-Desbois Question: I have a top-grafted Arctic willow with wart-like growthsContinue Reading Share this:TwitterFacebookLinkedInPinterestLike this:Like Loading...