PlantPeers
Back to Catalog
No image available
Fabaceae FAMILY

Robinia viscosa

Robinia viscosa

Edibility
0/5
Medicinal
0/5

Safety & Hazards

The roots are somewhat poisonous.

Cultivation Details

HabitDeciduous Tree
GrowthMedium

Robinia viscosa ia a very hardy plant, tolerating temperatures down to at least -25°c when fully dormant[1]. Succeeds in any soil, preferring one that is not too rich[2, 3]. Requires a well-drained soil, succeeding on dry barren sites[1, 3]. Plants are tolerant of drought and atmospheric pollution[3]. Plants prefer a position in full sun, though they also tolerate light shade. A fast-growing but short-lived species in the wild[4]. The branches are brittle and very liable to wind damage[3]. When plants are grown in rich soils they produce coarse and rank growth which is even more liable to wind damage[5, 3]. Any pruning should be done in late summer in order to reduce the risk of bleeding[3]. The young branches, seedpods and petioles are covered with dark glandular hairs that exude a clammy sticky substance[6]. Plants sucker freely, especially after coppicing, the suckers have vicious thorns. A very greedy tree, tending to impoverish the soil. Plants in this genus are notably resistant to honey fungus[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[3].

Propagation

Seed - pre-soak for 48 hours in warm water and sow the seed in late winter in a cold frame[7]. A short stratification improves germination rates and time[7]. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in the following summer. The seed stores for over 10 years[8]. Suckers taken during the dormant season. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Robinia+viscosa>

Pollinators

Insects

References

  1. [1]Shrubs. — Phillips. R. & Rix. M. · Pan Books · 1989 · ISBN 0-330-30258-2 ↩︎Excellent photographs and a terse description of 1,900 species and cultivars.
  2. [2]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  3. [3]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.
  4. [4]The Complete Trees of N. America. Field Guide and Natural History. — Elias. T. · Van Nostrand Reinhold Co. · 1980 · ISBN 0442238622 ↩︎A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.
  5. [5]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.
  6. [6]Manual of the Trees of N. America. — Sargent. C. S. · Dover Publications Inc. New York. · 1965 · http://www.biodiversitylibrary.org/ · ISBN 0-486-20278-X ↩︎Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader. It can be downloaded from the internet.
  7. [7]Hardy Woody Plants from Seed. — McMillan-Browse. P. · Grower Books · 1985 · ISBN 0-901361-21-6 ↩︎Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.
  8. [8]The Reference Manual of Woody Plant Propagation. — Dirr. M. A. and Heuser. M. W. · Athens Ga. Varsity Press · 1987 · ISBN 0942375009 ↩︎A very detailed book on propagating trees. Not for the casual reader.
  9. [9]The Woods of the United States — Sargent C.S. · D. Appleton & Co.; New York · 1885 · http://www.biodiversitylibrary.org ↩︎Contains information on the woods of a large number of N. American species of trees and shrubs. It can be downloaded from the Internet.
  10. [10]Fire Effects Information System — http://www.feis-crs.org/feis/ ↩︎An on-line information site with comprehensive information on over 1,100 species of plant. Mainly developed to supply information on the effects of fire on plants and animals, it also contains a wealth of other information on the plants
  11. [11]An Illustrated Flora of the Northern United States and Canada — Britton. N. L. Brown. A. · Dover Publications. New York. · 1970 · ISBN 0-486-22642-5 ↩︎Reprint of a 1913 Flora, but still a very useful book.