Lespedeza potaninii
Lespedeza potaninii
Safety & Hazards
None known
Cultivation Details
Lespedeza potaninii is a very cold-hardy plant, the rootstock being able to tolerate temperatures down to about -30°c when fully dormant. The top growth is much less hardy, however, and will be killed back to near the roots in all but very mild winters. However, plants will generally resprout freely from the base in the following spring and then flower in late summer[1]. A long growing season is required if the seed is to ripen successfully, and a hot summer will more fully ripen the wood, thus making it more likely to survive the winter[2]. Species in this genus generally grow best in a sunny position but are tolerant of some shade. They grow well in soils of a medium to light nature, tolerating dry conditions and low fertility[1]. Established plants are generally more or less drought tolerant[1]. The plant produces cleistogamous flowers (closed flowers that produce fertile seed without being pollinated) as well as hermaphrodite flowes that are pollinated by insects, especially bees[3]. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[1].
Propagation
Pre-soak the seed for 24 hours in warm water and then sow it in spring in a greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 7 - 10cm with a heel, mid summer in individual pots in a frame. It can be difficult to get the cuttings through their first winter, it is best to plunge the pots in a bed of ashes in a sheltered border outdoors[4]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Lespedeza+potaninii>
Pollinators
Insects, Cleistogamous
References
- [1]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.
- [2]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.
- [3]Flora of China — Missouri Botanical Garden Press; St. Louis. · 1994 · http://flora.huh.harvard.edu/china/ ↩︎An excellent, comprehensive resource in 25 volumes. In addition to the botanical information the flora also gives basic information on habitat and some uses. An on-line version is also available.
- [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.