Have you ever considered giving a tree as a lifetime tribute to a special event whether it is a birthday, special achievement, retirement, birth of a baby or death of a loved one? Businesses, churches, schools and civic groups can also sponsor trees.   Sponsorships    Full between $250 - $400   This sponsorship includes selection of a tree from the plan, an individualized certificate and tree marker.        Honor roll - up to $250   These donations accumulate to purchase additional trees. Each member will receive a certificate of appreciation. The Maple Grove Arboretum is located at 9400 Fernbrook La N.  For information about the tree sponsorship program contact the Parks Department or call 763-494-6504.