Da shameless "dressing it up all pretty and nice" practice of making ill-gotten wealth appear "clean, green, and refreshingly pristine" just like da lovely thick carpet of grass in yer yard, while covering up all of da underlying "dirt" --- i.e., da various "soiled 'n' unclean" methods --- dat were actually employed to obtain said undeserved riches.
As much "dirty money" as Burnie Madeoff MADE OFF WITH and BURNED THROUGH, he'd have needed a bleepin' PROFESSIONAL LANDSCAPER to do his money lawndering for him --- merely a regular "seed, fertilize, and water" operation wouldn't cut it in his case, given da colossal degree of HIS financial misdeeds!