Common Lilac
Syringa vulgaris

Common lilac is shade intolerant.  It suckers, so will often spread.  It grows to an average height of 12 to 20 feet.  It prefers well-drained soil.  It has fair wildlife value, and grows moderately.  It has fragrant flowers, suckers freely, and does not do well in heavy soils. 

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More photos can be viewed at:

http://www.mnpower.com/treebook/fact107.html