Ambrosia beetles (Coleoptera: Curculionidae Scolytinae) are becoming increasing problems in woody ornamental nursery crops. Xylosandrus crassiusculus has become especially worrisome to states in the southeastern and Atlantic states. We tested traps as monitoring systems by evaluating the influence of trap height captures of ambrosia beetles in ornamental nurseries in Ohio, Tennessee, and Virginia. In all three states, we found that traps placed 0.5 m above the ground caught more beetles than traps at 1.7 and 3.0 m. In Ohio, the most common species trapped was Xylosandrus germanus while no X. crassiusculus were captured.