H-401 M. Douglas Bryant, Extension Horticulturist Emeritus Lilacs are well adapted to New Mexico conditions. They prefer neutral to slightly alkaline soil. They are tolerant to cold and have survived 60 below zero. They are long-lived, and their culture presents no special difficulties. A favorable site and timely care, however, enhance the attractiveness of the plants.
Sites Select a well-drained soil in a sunny location.
Common lilac and Persian lilac make excellent informal hedges. Modern varieties are particularly well suited for prominent locations in large gardens and public parks. Soil Lilacs grow best in loam, but they also do well in other soils. They are gross feeders and respond favorably to applications of barnyard manure and commercial fertilizers. Fertilize young plants regularly until they produce a good root system and begin to flower.