Quinces Bare root maidens or two year trees on Quince A , Quince C or Quince E rootstocks. See also Oriental shrub quinces. Quince A (QA) is semi-dwarf, producing bush trees about 15 ft (4.5m) high. Requires staking. Quince C (QC) is dwarf, and produces bush trees about 4 m (13 ft) high which come into bearing slightly earlier. Requires good growing conditions and staking. Quince E (QE) is dwarf, similar quince C but is more productive and hardier. No products were found matching your selection.