The earliest-blooming lilac and arguably the best for fall foliage display, this hardy, easy to grow, and highly adaptable. Its broad conical clusters of fragrant lavender, purple, or white flowers from early to mid-spring, some 10 days before those of common lilac. A large rounded deciduous shrub from East Asia, it has broad heart-shaped leaves that are bronze-tinged when young and turn wine-purple in fall.
Plant this shrub in full to partial sun and well-drained mildly acidic to mildly alkaline soil. It is most floriferous and least lanky in full sun. It requires relatively chilly winters and moderate summers to grow and flower its best. The early blooms may be damaged by late freezes. Like most lilacs, it is susceptible to powdery mildew, especially in humid droughty conditions. Mass it in screens, windbreaks or hedges, or use it singly in a shrub planting or mixed border. It is ideal near a path or patio, where its perfumed flowers can work their magic. The flowers are also wonderful in bouquets.
Info source: learn2grow.com
Genus - Syringa
Species - Oblata
Common name - Early Korean Lilac
Pre-Treatment - Required
Hardiness zones - 3 - 8
Height - 8'-14' / 2.40 - 4.50 m
Spread - 8'-14' / 2.40 - 4.50 m
Plant type - Shrub
Vegetation type - Deciduous ornamental
Exposure - Full Sun, Partial Sun, Partial Shade
Growth rate - Medium
Soil PH - Acidic, Neutral, Alkaline
Soil type - Loam, sand, well drained
Water requirements - Average water needs. Water regularly, do not over water
Landscape uses - Cutflower, Feature Plant, Hedges, Mixed Border, Screening / Wind Break
Germination rate - 80%
Bloom season - Early Spring, Spring
Leaf / Flower color - Green / Purple
|Germination||Seed will benefit from a short cold moist stratification (30-60 days) to increase speed, uniformity and % of germination. Germination will improve with alternating temperatures of approx. 8 hours @ 86 deg. F and 16 hours @ 68 deg. Many growers use a fungicide durring stratification. Other sterilization methods you can use include a 12 hour hydrogen-peroxide soak; surface sterilization with a 1:10 bleach:water mix, soaking the seed for 8 minutes then thoroughly washing off the bleach with warm water; a short diluted iodine soak. |
1. Scarification: Soak in water, let stand in water for 24 hours
2. Stratification: cold stratify for 30-60 days
3. Germination: sow seed 1/4 deep, keep moist, mulch the seed bed, cover seedbed with some shade, can be sown outdoors in the fall for spring germination.
Stratified syringa seeds normally germinates in 14-60 days. Normally will only germinate with light, GA-3 may promote germination - even in the dark.