Complex sentence: Needleman's writing on gardens and design has appeared in "The New York Times"; "Slate", where she penned "The Cranky Gardener" column; and "House & Garden", where she was Editor at Large.
Split into simpler sentences: Needleman's writing on gardens and design has appeared in "The New York Times"; "Slate", where she penned "The Cranky Gardener" column. Also "House & Garden", where she was Editor at Large.