In large part, disposal of yard trimmings—such as grass clippings and trimmings from bushes, trees, and other yard vegetation—in landfills is generally not necessary, since backyard composting and yard trimmings collection and recovery programs have become quite popular. Composting yard trimmings saves landfill space and reduces methane production in landfills. Methane gas can contribute to global climate change.
Many local governments offer drop-off and/or curbside collection of yard trimmings not composted by homeowners. Drop-off sites work best with residents accustomed to delivering their household discards to landfills or transfer stations to avoid the costs of a curbside collection program. Curbside collection is more expensive than drop-off but typically garners higher participation and diversion rates. The higher operational costs of curbside collection programs can be offset by:
- Decreased disposal costs (tipping fees);
- Increased landfill life; and
- Potential revenue from compost and/or mulch sales.
Yard trimmings collection programs might occur seasonally or by request depending on where you live.
Source: http://www.epa.gov/epawaste/conserve/materials/organics/yd-basic.htm