8" - 9" (20.3 cm - 22.8 cm) What are the tallest trees you sell? Woodland Classics - Deciduous: 8"-9" Cool Shade (TR3521) and Waters Edge (TR3539) Woodland Classics - Conifer: 7"-8" Standing Timber Ready Made Realistic Trees - Deciduous: 8"-9" Medium Green (TR1519) Ready Made Realistic Trees - Conifer: 7"-8" Conifer Green (TR1563) What is the best way to attach larger trees to my layout (9") so that they are stable? Attach trees to layout using Scenic Glue or Hob-e-Tac. Poke a small hole, apply a drop of glue over hole and insert tree's base pin. Hold until setting begins. Add additional adhesive around the base of the tree for extra support. The optional base can also be used. Attach with Scenic Glue.