Updated

All those broken bats this season in Minnesota Twins games have a silver lining.

The Twins and the state Department of Natural Resources agreed on a "Break a Bat, Plant a Tree" promotion at the beginning of the season. Every time a Twins' pitcher broke the bat of an opposing player, 100 trees will be planted in a state park or similar outdoors area.

When the regular season ended Sunday, Twins pitchers had broken 180 bats. That means 18,000 trees will be planted, mostly next spring.

A number of professional sports teams have made an effort to "go green." The Twins plan to continue the tree promotion next season.