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Sapindaceae FAMILY

Aesculus × carnea

Aesculus × carnea

Edibility
1/5
Medicinal
2/5

Safety & Hazards

Most, if not all, species in this genus are poisonous, containing the glycoside aesculin, the saponin aescin, and possibly alkaloids[1]. The seed is rich in saponins[2]. Although poisonous, saponins also have a range of medicinal applications and many saponin-rich plants are used in herbalism (particularly as emetics, expectorants and febrifuges) or as sources of raw materials for the pharmaceutical industry. Saponins are also found in a number of common foods, such as many beans. Saponins have a quite bitter flavour and are in general poorly absorbed by the human body, so most pass through without harm. They can be removed by carefully leaching in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of raw foods that contain saponins. Saponins are much more toxic to many cold-blooded creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish and make them easy to catch[PFAF].

Cultivation Details

HabitDeciduous Tree
Growth—

Aesculus × carnea prefers a continental climate with its hot summers, cold winters and usually a clear movement from one season to another. The dormant tree can tolerate temperatures down to at least -15°c, but in more maritime climates it is often tempted to come into growth early and this new growth can easily be damaged by late spring frosts[3]. Prefers a deep loamy well-drained soil but is not too fussy[4, 5]. There are some named forms selected for their ornamental value[5, 3]. Seedlings quickly develop a taproot and larger plants can be difficult to transplant[6]. Abnormal cell development in this species may result in eruptions on trunks over 30cm in diameter - these ultimately decay[3]. Although a hybrid species, it breeds true from seed due to a doubling of the chromosomes[5, 7].

Propagation

Seed - best sown outdoors or in a cold frame as soon as it is ripe[5, 8]. The seed germinates almost immediately and must be given protection from severe weather[9]. Seedlings develop a large taproot following germination and so, if grown in containers, should be given sufficient root room[10]. The seed has a very limited viability and must not be allowed to dry out. Stored seed should be soaked for 24 hours prior to sowing and even after this may still not be viable[8, 11]. It is best to sow the seed with its 'scar' downwards[9]. If sowing the seed in a cold frame, pot up the seedlings in early spring and plant them out into their permanent positions in the summer. This species is a garden hybrid though it breeds relatively true from seed[3]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-20. <temperate.theferns.info/plant/Aesculus+%C3%97+carnea>

Pollinators

Bees

References

  1. [1]Poisonous Plants of North Carolina — http://www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm ↩︎An excellent concise but comprehensive guide to toxic plants that grow in N. Carolina. It lists even those plants that are of very low toxicity, including several well-known food plants such as carrots and potatoes.
  2. [2]A Weavers Garden — Buchanan. R. · McGraw-Hill Contemporary · 1987 · ISBN 0934026289 ↩︎Covers all aspects of growing your own clothes, from fibre plants to dyes.
  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]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 ]).
  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]KemperCentreForHomeGardeningPlantFinder — Missouri Botanical Garden · http://www.mobot.org/gardeninghelp/plantfinder/ ↩︎Basic cultivation details, plant uses, habitat etc for several thousand species of plants, mainly from the temperate zone.
  7. [7]Flora of the British Isles. — Clapham, Tutin and Warburg. · Cambridge University Press · 1962 · ISBN - ↩︎A very comprehensive flora, the standard reference book but it has no pictures.
  8. [8]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.
  9. [9]The Plantsman. Vol. 4. 1982 - 1983. — ? · Royal Horticultural Society · 1982 · ISBN - ↩︎Excerpts from the periodical giving cultivation details and other notes on some of the useful plants, including Distylium racemosum and some perennial members of the family Berberidaceae.
  10. [10]Silvics of North America. Agricultural Handbook No. 654. — Burns. R.M. & Honkala. B.H. · USDA Forest Service; Washington DC. · 1990 · http://www.na.fs.fed.us/spfo/pubs/silvics_manual/table_of_contents.htm ↩︎A very comprehensice guide to about 200 species of timber trees of N. America, Hawaii and Puerto Rico. Mainly temperate species, plus a number of tropical species. It is downloadable from the Internet.
  11. [11]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.
  12. [12]Earth Medicine, Earth Food. — Weiner. M. A. · Ballantine Books · 1980 · ISBN 0-449-90589-6 ↩︎A nice book to read though it is difficult to look up individual plants since the book is divided into separate sections dealing with the different medicinal uses plus a section on edible plants. Common names are used instead of botanical.
  13. [13]Handbook of the Bach Flower Remedies — Chancellor. P. M. · C. W. Daniel Co. Ltd. · 1985 · ISBN 85207 002 0 ↩︎Details the 38 remedies plus how and where to prescribe them.
  14. [PFAF]Plants for a Future — pfaf.org ↩︎