Joining the Arbor Day Foundation is an ideal way to get in the mood for spring planting. Anyone from Ohio who joins the Foundation this month will receive 10 free Colorado blue spruce trees to plant when the weather turns warm. The trees will be shipped postpaid at the right time for planting, between March 1 and May 31, with enclosed planting instructions. The 6- to 12-inch trees are guaranteed to grow, or they will be replaced free of charge. To become a member of the Foundation and receive the free trees, send a $10 contribution to TEN FREE COLORADO BLUE SPRUCE TREES, Arbor Day Foundation, 100 Arbor Avenue, Nebraska City, NE 68410, by Feb. 28, , or visit arborday.org/february.