For those whose muscles are still suffering from all that backbreaking work in the garden over the long weekend, next time why not let Mac do the work while you sit back and watch? A Microbytes reporter who dropped in on the Landscape Industry Show at Long Beach, California (final resting place of the SS Queen Mary), was enchanted with the offering from Nova Electronics and Software, Riverside, California, a $5,000 complete lawn care management system running on the Macintosh and dubbed MacWeedMan.