when to prune crabapple trees Home › Forums › Tree & Shrub Questions › Tree & Shrub Questions › when to prune crabapple trees This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 7 years, 12 months ago. Viewing 1 post (of 1 total) Author Posts September 30, 2008 at 12:15 pm #28514 Anonymous I have some crabs that I planted about 6 years ago. They need pruning. When is the best time? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.