Late Lilac (Syringa Villosa) 15 seeds

Few lilacs bloom as late in the season as the super hardy late lilac. This northern Chinese native produces conical upright clusters of purplish-pink or white blooms at the tips of the current season's growth. The fragrant tubular flowers open more than a week or more after those of common lilac (Syringa vulgaris). Green seed capsules follow, which change to dark brown by midsummer. Mature specimens reach medium height and develop an upright, rounded habit. Its sandy-brown stems support oval, deeply veined, dark-green leaves that do not produce any notable fall color.
Grow late lilac in full to partial sun and well-drained, mildly acid to mildly alkaline soil. Plants are most floriferous and least lanky when grown in full sun. With its exceptional cold hardiness, this is among the few lilacs that succeed in areas with severe winter cold, such as the northern Great Plains. In fact, cold winters, as well as moderate summers, are required for best growth and flowering. Pruning is typically done after flowering. Remove the seedpods to improve appearance through summer.
Like most lilacs, this species is susceptible to powdery mildew, especially in humid, droughty weather conditions. Use it as a screen, hedge or individual specimen shrub. It can be trained as a multi-stemmed, small tree. Plant it near a path or patio, where its perfumed flowers can work their magic. (info source: Learn2Grow.com)

Genus - Syringa
Species - Villosa
Common name - Late Lilac
Pre-Treatment - Required
Hardiness zones - 3 - 7
Height - 6'-12' / 1.80 - 3.70 m
Spread - 5'-10' / 1.50 - 3 m
Plant type - Shrub
Vegetation type - Deciduous ornamental
Exposure - Full Sun, Partial Shade
Growth rate - Medium
Soil PH - Neutral
Soil type - Loam, sand, well drained
Water requirements - Average Water
Landscape uses - Cutflower, Feature Plant, Hedges, Mixed Border, Screening / Wind Break
Germination rate - 85
Bloom season - Late Spring, Early Summer
Leaf / Flower color - Green / Purple, lavender