Will lilac roots damage the leach lines from my septic.
Jul 09, Plant lilac trees and shrubs where they can receive six hours of sun a day, which is considered full sun. Light shade is acceptable, but too much shade can inhibit flower production. Lilacs like soil that is slightly acidic to slightly alkaline.

If the soil is too acidic, you will need to amend it. Jan 08, Plant lilac bushes in a hole dug approximately twice as large as the root ball. When planting lilac bushes, make sure that the spot you have chosen has good drainage, and at least 6 hours of sun a day.
However I beg to differ!
If you have acid soil, throw a handful of lime in to the planting hole. Make sure you give your lilac plenty of bushlopping.clubs: 9. Apr 14, Space multiple lilac bushes 5 to 15 feet apart, depending on the bushlopping.club Type: Trees, Shrubs, and Vine. Apr 11, Planting Lilac Bush Spring or fall is the best time for planting lilac bushes.
The leaves are gray-green to blue-green in color and reach around 2 to 5 inches long; they do not change color in the fall.
Situate the lilac with its roots spread vertically in the ground and make the hole both deep and wide enough to accommodate them. To get the best flowers and succeed in growing lilac bushes, you need to follow these easy rules: choose a proper site for your lilac with good drainage, good soil, good sun and provide good care.
Full sun lovers, lilacs are easily grown in fertile, humus-rich, alkaline to neutral, dry to medium, well-drained soils.