LINCOLN, Neb. (AP) — Trees will be planted in at least 40 Nebraska communities as part of a weeklong event.

A grant from the Nebraska Environmental Trust will provide more than 400 trees to the communities during Nebraska ReTree week. The week runs from Saturday through Sunday.

The 10-year initiative promotes the proper planting and care of 1 million trees in Nebraska by 2017.

Jessica Kelling, the event’s coordinator, says fall is the perfect time to plant trees because cooler temperatures help them establish strong roots for spring growth.

Many of the tree-planting events seek to replace street trees lost in recent years due to drought, severe weather, invasive species and poor planting. Nebraska’s first lady, Sally Ganem, will participate in a tree-planting in Kearney.