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Pinaceae FAMILY Vulnerable

Pinus krempfii

Pinus krempfii

Edibility
0/5
Medicinal
0/5

Safety & Hazards

The wood, sawdust and resins from various species of pine can cause dermatitis in sensitive people[1].

Cultivation Details

HabitEvergreen Tree
Growth—

Pinus krempfii is found at moderate elevations in a monsoonal region of tropical Vietnam. The mean annual temperature is 19 - 23°c, with a mean anual rainfall above 1,500mm. The plant is not very cold-hardy, being damaged by temperatures around freezing[2]. Pine species in general require a sunny position if they are to grow well and, whilst the different species have their own soil preferences, most will thrive in a light well-drained sandy or gravelly loam[3, 4]. Plants can regenerate in the deep shade of the forest on deep, humus-rich soils, though regeneration is much better in more open situations[2]. Mature seed cones are 4 - 9cm long and 3 - 6cm wide Cones are produced in spring, maturing 15 - 18 months later[2]. The seeds are released whilst the cones are still on the tree[5]. A long-lived species, some specimens are believed to be more than 1,000 years old[6]. Plants in this genus are notably susceptible to honey fungus[7].

Propagation

Seed - some highland provenances have a slight temperature dormancy, and it is recommended to cool down imbibed seed for 2 - 3 weeks in a refrigerator before sowing[8]. Pre-soaking the seed in warm water at 40 - 50°c, then cooling it down for a night enhances germination[8]. Sowing in sand in a seedbed and transplanting into polythene tubes is most common[8]. Germination is quite fast for pre-treated seed - usually 5 - 20 days[8]. Time in the nursery is 6 months to 1 year, planting out when the plants are 14 - 20 cm tall[8]. Seedlings may already be suitable for transplanting after 4 - 6 months[9]. Successful natural regeneration is only possible where a relatively large amount of sunlight reaches the ground[9]. The seeds can be stored for several years, provided they are kept dry, cold and in an airtight container[9]. Air-layering[8]. Top cleft grafting[8]. Mass propagation by rooting cuttings from hedged orchards is technically possible but not yet operational on a large scale[8]. Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2026-02-20. <tropical.theferns.info/viewtropical.php?id=Pinus+krempfii>

Pollinators

Wind

References

  1. [1]A Field Guide to Medicinal Plants. Eastern and Central N. America. — Foster. S. & Duke. J. A. · Houghton Mifflin Co. · 1990 · ISBN 0395467225 ↩︎A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
  2. [2]The Gymnosperm Database — http://www.conifers.org/index.htm ↩︎A vast amount of information on conifers and families of gymnosperms.
  3. [3]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 ]).
  4. [4]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.
  5. [5]Conifers of Vietnam — Luu N.D.T.; Thomas P.I. · Darwin Initiative · 2004 · http://www.ceh.ac.uk/sections/bm/conifer_manual.html · ISBN 1-872291-64-3 ↩︎Described by the publishers as an illustrated field guide for the most important forest trees of Vietnam, it is available as a PDF document on the Internet.
  6. [6]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.
  7. [7]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.
  8. [8]Seed Leaflets — Various · Forest & Landscape. Denmark · http://en.sl.life.ku.dk/Publikationer/Udgivelser/PopulaerPublikationer.aspx?katid={D28373CC-6EF3-4EF8-B097-6D83FABF209E}&serieid={9F1C3DB1-6E7B-4CF1-AF53-F480B0CB40EF}&sort=title ↩︎A series of leaflets, jointly produced by the University of Copenhagen and the Royal Botanic Gardens at Kew, focussing on seed information for a number species, but also giving a lot of other information about each plant.
  9. [9]World Agroforesty Centre — http://www.worldagroforestry.org/ ↩︎An excellent online database of a huge range of trees giving very good information on each plant - its uses, ecology, identity, propagation, pests etc.
  10. [10]A Modern Herbal. — Grieve. · Penguin · 1984 · ISBN 0-14-046-440-9 ↩︎Not so modern (1930's?) but lots of information, mainly temperate plants.
  11. [11]Nature's Colors - Dyes from Plants. — Grae. I. · MacMillan Publishing Co. New York. · 1974 · ISBN 0-02-544950-8 ↩︎A very good and readable book on dyeing.
  12. [12]Protabase - Plant Resources of Tropical Africa. — http://www.prota.org ↩︎An excellent on-line database with detailed information on over 3,200 species of useful plants of Africa.
  13. [13]Vegetable Gums and Resins. — Howes. F. N. · Faber · ISBN 81-88818-17-8 ↩︎A very good book dealing with the subject in a readable way.
  14. [PFAF]Plants for a Future — pfaf.org ↩︎