The city's Department of Environmental Services is asking residents to recycle their Christmas trees after the holidays.

Households with city collection can place bare trees — without flocking, ornaments or tinsel — curbside as part of the normal green-waste pickup.

The city provides curbside green-waste collection to more than 160,000 homes on O'ahu. Most areas use the green cart system, while others use bags or bundles.

For those areas that use green carts, trim and cut trees so they fit inside the cart with the lid closed. For residents who use the bag collection system, cut and bundle trees to 3-foot lengths and place curbside on your normal green-waste collection day.

For apartment residents, trees may be dropped off at any refuse convenience center or directly to the composting facility — there is no tip fee charged for Christmas trees over the holidays.

For more information on greencycling, visit www.opala.org and click on Holiday Trash Tips.