Home Events Autumn at the Arboretum About this Event Autumn at the Arboretum features breathtaking colors of fall including 150,000 autumn flowers accented by pumpkins, gourds and squash from Floydada, Texas. The festival features the return of Mommy and Me Mondays and Tiny Tot Tuesdays, a hay bale maze, a pumpkin patch with pumpkins for purchase, music and more. When Fri., 10-23-20209 a.m.-5 p.m Where Dallas Arboretum The Dallas Arboretum and Botanical Garden, 8525 Garland Rd, Dallas, TX 75218 The Dallas Arboretum and Botanical Garden, 8525 Garland Rd, Dallas, TX 75218