Answer: Syringa (lilac) is a great shrub for cold climates as they need cold winters to grow well. They grow best in full sun; ideally six hours or more per day. Although they will tolerate part shade, they will bloom less.
Can you plant lilacs in shade?
Where to Plant Lilacs. The ideal spot to plant lilacs is in an area with full sun (at least 6 to 8 hours per day)—give them too much shade and they may not bloom. Lilacs also like slightly alkaline, moist, well-drained soil.
Do lilacs like shade or sun?
Planting Lilacs
They also need at least six hours of sun a day to have excellent flowering. Provide a well-drained, alkaline soil.