If you're buying groceries tomorrow afternoon at Hy-Vee at the West Kimberly Road store in Davenport, you'll get a free Colorado blue spruce tree to plant.

In celebration of Arbor Day, Hy-Vee will give away about 500 free  seedlings beginning at 4 p.m. Hy-Vee staff will give away the trees on a first-come, first-served basis as customers leave the store. The giveaway will end when supplies run out.

In the company's eight-state region, 4,000 seedlings will be distributed. It's part of the One Step program, which turns proceeds from everyday products into donations that help to feed the hungry, grow community gardens, build wells and plant trees, according to a news release.