
Syringa josikaea
Syringa josikaea
Safety & Hazards
None known
Cultivation Details
Succeeds in any fertile well-drained neutral to alkaline soil, preferring a position in full sunshine[1, 2]. Thrives in chalky soils[1]. Plants in this genus are notably susceptible to honey fungus[2]. Often grown as an ornamental, the plant is used in breeding programmes, especially for the development of a number of late flowering hybrids[3]
Propagation
Seed - sow early spring in a north facing cold frame. Pre-treating the seed with 4 weeks warm then 3 weeks cold stratification improves germination. It is probable that sowing the seed as soon as it is ripe in a cold frame would be a more reliable method[PFAF]. Prick the seedlings out into individual pots once they are large enough to handle. Plant them out in the summer if sufficient growth has been made, otherwise grow them on in a cold frame for their first winter and plant out in late spring of the following year. Cuttings of young shoots, 7cm with a heel, early summer in a frame[2]. Cuttings of half-ripe wood, 7cm with a heel, mid summer in a frame[2]. Layering in spring before new growth begins. Takes 12 months[4]. Division of suckers in late winter. They can be planted straight out into their permanent positions. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Syringa+josikaea>
Pollinators
Insects
References
- [1]Ornamental Shrubs, Climbers and Bamboos. — Thomas. G. S. · Murray · 1992 · ISBN 0-7195-5043-2 ↩︎Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.
- [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
- [3]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
- [4]Propagation of Trees, Shrubs and Conifers. — Sheat. W. G. · MacMillan and Co · 1948 · ISBN - ↩︎A bit dated but a good book on propagation techniques with specific details for a wide range of plants.
- [5]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
- [PFAF]Plants for a Future — pfaf.org ↩︎