The city maintains numerous public lawn areas including parks, gardens and boulevards. For over 20 years, the city has used an Integrated Pest Management (IPM) program for maintaining the public grass and landscaped areas. All city mowers have mulching blades, and city staff sets the mowers at a high cut setting. Best IPM practices indicate that the taller the turf the less weed infestation, and thus less need for lawn treatment. Use of mulching blades returns nutrients to the lawn and helps keep the grass healthy.