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Fabaceae FAMILY

Lespedeza juncea

Lespedeza juncea

Edibility
2/5
Medicinal
2/5

Safety & Hazards

None known

Cultivation Details

HabitDeciduous Shrub
Growth—

Lespedeza juncea is a very cold-hardy plant, the rootstock being able to tolerate temperatures down to about -25°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[1]. 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[2]. Established plants are generally more or less drought tolerant[2]. 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 is related to Lespedeza sericea[4]. 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[2].

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[5]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Lespedeza+juncea>

Pollinators

Insects, Cleistogamous

References

  1. [1]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.
  2. [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. [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. [4]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.
  5. [5]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.
  6. [6]Flora of the USSR. — Komarov. V. L. · Israel Program for Scientific Translation · 1968 · http://www.biodiversitylibrary.org · ISBN - ↩︎An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers. It can be downloaded from the Internet.
  7. [7]Famine Foods listed in the Chiu-Huang Pen-ts'ao. — Reid. B. E. · Southern Materials Centre; Taipei · 1977 · ISBN - ↩︎A translation of an ancient Chinese book on edible wild foods. Fascinating.
  8. [8]Plants and People of Nepal — Manandhar. N. P. · Timber Press. Oregon. · 2002 · ISBN 0-88192-527-6 ↩︎Excellent book, covering over 1,500 species of useful plants from Nepal together with information on the geography and peoples of Nepal. Good descriptions of the plants with terse notes on their uses.
  9. [9]Corean Flora. — Wilson. E. H. and Trollope. M. N. · Royal Asiatic Society · 1918 · ISBN - ↩︎A very small handbook, it does give a little bit of information on Korean plants.