Sheet mulching is the most natural and beneficial method to remove a lawn. This method maintains the soil structure, adds organic matter, requires a moderate amount of labor, and does not require removal and disposal of turf.
Sheet mulching is a method of ‘removing’ your lawn without actually digging it up
Compared to digging up a lawn, it is much easier, cheaper and better for the soil. Essentially it is a method to decompose the lawn in place, and improve the soil. Like making lasagna, there are many recipes, but the goal is to always decompose the lawn and create a quality planting area. Just follow these steps.
"Lawn to Garden" is a comprehensive website providing information on sheet mulching, including a materials calculator, a searchable mulch provider list, how-to videos, and sheet mulching material coupons: http://www.lawntogarden.org/
A Spanish version of A Bay-Friendly Landscaping Guide to Mulch: