0 0 0 Diane B Jasper, GA Like Clip Gardening Landscaping Can pre-emergent be applied in a perennial flower bed or over groundcover or over weeping love grass without damage to those plants? Displaying 1 of 8 comments See All Comments Walter Reeves Decatur, GA Preen is a product used by gardeners for many years in landscape situations. NOTE: You can drag and drop your photos to reorder them [?] You can select multiple files by holding down the Ctrl key (or Command key on a Mac) and left-clicking on individual files. Each file can be up to 20 MB. or Embed Video Add Required Comment Saving...