[header] How to care for lilacs [title] Plant lilacs in the fall in full sun. [step] Lilacs need six hours of full sunlight a day to thrive. If your lilacs are not getting adequate sunlight, transplant or move the plant to an area where they can get more. 
While you can plant lilacs in the spring, the fall is preferred. [substeps] To transplant plants from a container, simply remove them from the container and spread out the roots.