Syringa vulgaris 'Frank Klager'
Plant Common Name
Common Lilac, Frank Klager Lilac
In Washington State, the name Hulda Klager will forever be associated with lilac breeding. The dark purple variety, ‘Frank Klager’, was named for her husband and introduced in 1928. It is heavily scented and vigorous.
When not in bloom the large, rounded, deciduous shrub offers little interest, but it is exceptionally beautiful when its upright flower panicles appear in late spring to early summer. ‘Frank Klager’ offers lots of deep purple flowers that are highly fragrant and ideal for cutting. The blooms are held at tips of the branches and attract loads of bees, butterflies and many other insect pollinators.
Lilacs develop their best habit and flowers when grown in full sun. They prefer average to fertile soil that is neutral to slightly alkaline and well-drained. Though moderately drought tolerant, these lilacs grow best is given supplemental water during very dry spells. Next year's flower buds are set shortly after blooming, so lilacs must be pruned directly after their yearly display. There are several serious pests and diseases that plague them. Lilac borers can be a fatal, so keep an eye out for their telltale half-moon shaped holes along the trunks. Powdery mildew is also a yearly problem. Extreme drought stress can invite both.
French lilacs make fine feature plants. Cut their fresh blossoms for fragrant, long-lasting flower arrangements.
AHS Heat Zone
8 - 1
USDA Hardiness Zone
4 - 8
A1, A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14
Full Sun, Partial Sun
10'-12' / 3.0m - 3.7m
6'-8' / 1.8m - 2.4m
Late Spring, Early Summer
Hybrid Origin, Eastern Europe
Clay, Loam, Sand