Answer: There are a number of evergreens which remain narrow and under 12' in height. HOLMSTRUP EASTERN ARBORVITAE (Thuja occidentalis 'Holmstrup') grows 5-7' tall and remains 2-3' wide; EMERALD ARBORVITAE (Thuja occidentalis 'Emerald') reaches 15' tall and 3-4' wide at maturity; SWANE'S GOLDEN ITALIAN CYPRESS (Cupressus sempervirens 'Swane's Golden') reaches 15-20' tall and 3-4' wide. Those that are taller than 12' at maturity can be carefully pruned to keep them within bounds. Enjoy your garden!
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