Acer circinatum Baby Buttons is a very nice cultivar of the vine maple. Baby Buttons is a dwarf maple with a round form. The beautiful green leaves are much smaller than the species. Baby Buttons prefers sun/partial shade in well-drained soil. 2' tall x 2' wide in 10 years. Very similar to Borts Broom - perhaps the same? Graft bulge often present. Hardy to -20 degrees. USDA zone 5.