Syringa hyacinthiflora ( Hyacinth Lilac )
This hardy , deciduous , large shrub is a cross between Syringa vulgaris and Syringa oblata . Habit is erect at first , later spreading . leave are loosely ovate , bronzy when untried , turning cherry - purple in fall . Mount Baker has undivided , white flower , held on 5 in long panicles . Prefers a cooler climate and neutral soil with peat or foliage mold enrichment ....