General Culture:
Easily grown in average, medium, well-drained soil in full sun. Tolerates light shade, but best bloom quality and disease resistance occur in full sun. Prefers rich, moist, neutral soils. Foliage needs good air circulation. Prompt removal of faded flower panicles before seed set will increase bloom for the following year. Prune as needed immediately after flowering.
Noteworthy Characteristics:
Syringa pubescens subsp. microphylla (see F790), commonly known as littleleaf lilac, is a dense, compact, mounded, spreading, deciduous, small-leaved shrub that grows to 6-7’ tall and to 12’ wide. Single, sweetly fragrant, lilac-pink flowers arranged in dense clusters (panicles to 4” long) bloom in May (St. Louis area). Elliptic to ovate, medium green leaves (to 2” long) are slightly hairy below. In comparison to the subspecies, ‘Superba’ features (1) deep pink blooms, (2) a more profuse May bloom, (3) sporadic rebloom in summer and/or fall, (4) a slightly broader habit (to 14’ wide) and (5) better foliage resistance to powdery mildew. Synonymous with S. microphylla ‘Superba’.
Problems:
‘Superba’ is resistant to the common lilac diseases, especially powdery mildew. Leaf spot and blight are occasional problems. Stem borer, scale and leaf miner are occasional insect pests.
Uses:
Although spectacular when in full bloom, lilacs are otherwise somewhat ordinary shrubs. May be grown as specimens or massed. Also effective as privacy screens or hedges. Good for shrub borders or background for perennial borders. Foundations.
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Garden, 2001-2010