As part of the Enterprise 50 Million Tree Pledge, the Arbor Day Foundation is using funding from the Enterprise Rent-A-Car Foundation to plant 1 million trees throughout the U.S., Canada, the U.K. and Germany.

During the last 10 years, the pledge has supported more than 80 reforestation projects and planted more than 50 different species of trees across 15 states, according to Enterprise.

The 50 Million Tree Pledge was established to thank customers for their loyalty. To date, more than 9 million trees have been planted through this partnership with the Arbor Day Foundation, the U.S. Forest Service, the U.S. National Park Service, Tree Canada, the U.K.’s Woodland Trust and the German Forest Protection.

“We are proud to be part of a strategic international initiative like this, especially since it expresses our gratitude and appreciation for many years to come,” said Pam Nicholson, president and CEO at Enterprise. “In addition, we’re maximizing the overall investment because Arbor Day Foundation’s reforestation plantings are professionally managed and thus have a higher-than-average survival rate.”

By the end of 2015, 10 million trees will have been planted through the program in forests across Alabama, California, Colorado, Florida, Idaho, Michigan, Minnesota, Montana, Oregon, Pennsylvania, South Carolina, South Dakota, Texas, Utah, Wyoming, Canada, Germany, the U.K. and Scotland.

"We are now in the tenth year of this unprecedented partnership," said Dan Lambe, president of the Arbor Day Foundation. "… Through the next 40 years, thanks to the vision and commitment of Enterprise, the next 40 million trees will be planted wherever they will best serve people, our environment and water resources for generations to come."