It is noted for its dark purple-red flowers which bloom on inflorescences that are longer (to 12? long) and narrower than those found on the species and most cultivars. Flowers bloom late May to early June (later than the bloom on species shrubs), thus helping extend the length of the lilac bloom season. Growing Details Common Name: 'Ludwig Spaeth' Genus: Syringa Species: vulgaris Skill Level: Beginner Exposure: Full sun Hardiness: Hardy Soil type: Well-drained/light, Clay/heavy, Chalky/alkaline Height: 500cm Spread: 450cm Flowering period: May to June Description This bushy deciduous shrub is best known for its heart shaped leaves and compact trusses of fragrant flowers. Flowers in late spring to early summer.