Syringa vulgaris and S. Xhyacinthiflora

Lilacs are large (to 15’) deciduous shrubs with fairly upright growth in youth, becoming more spreading with age. This classic group of plants is well-known and scarcely needs description. Lilacs are grown for their dense panicles of small, tubular flowers, which can be extremely fragrant. Hardy to USDA zone 3, unless otherwise noted. (For tree lilacs, see the Ornamental Trees section).

‘Adelaide Dunbar’ – fragrant, double purple flowers

‘Andenken an Ludwig Spaeth’ – ("Ludwig Spaeth’) single purple flowers

‘Arch McKean’ – single, fragrant, very large, magenta flowers

‘Avalanche’ – fragrant, large, single white flowers

'Beauty of Moscow' (see 'Krasavitsa Muskovy')

‘Belle de Nancy’ – double pink flowers

'Charles Joly' - double magenta flowers

'Charles X' - single reddish flowers

‘Charm’ – single pink flowers

‘Edward J. Gardner’ – double pink flowers

‘Fernand L. Pegot’ – double pink flowers

‘Katherine Havemeyer’ – fragrant, large, double bluish-pink flowers

‘Krasavitsa Muskovy’ – (‘Beauty of Moscow’) double white flowers

‘Maiden’s Blush’ – single pink flowers, early

‘Miss Ellen Willmott’ – double white flowers

‘Mme. Le Moine’ – double white flowers

‘Montaigne’ – double pink flowers

‘Nadezhda’ – large, double blue flowers

‘President Grevy’ – ('Pres. Grevy’) double blue flowers

‘Primrose’ – single yellowish flowers

‘Sensation’ – flowers single purplish-pink with white border, late