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Poaceae FAMILY

Pseudosasa japonica

Pseudosasa japonica

Edibility
2/5
Medicinal
2/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Bamboo
Growth—

Pseudosasa japonica is one of the easiest bamboos to grow in the temperate zone[1] It is very hardy, tolerating temperatures down to at least -15°c[2, 3], with some reports saying -24°c. Prefers an open loam of fair quality and a position sheltered from cold drying winds[4, 1, 5] but it tolerates maritime exposure[6, 7]. Succeeds on peaty soils[1]. Succeeds in soils that are half earth and half stone[8]. Requires abundant moisture and plenty of organic matter in the soil[3]. Endures near-saturated soil conditions[3]. Dislikes drought[4]. New shoots appear from mid spring[2]. This species is notably resistant to honey fungus[3]. Bamboos have an interesting method of growth. Each plant produces a number of new stems annually - these stems grow to their maximum height in their first year of growth, subsequent growth in the stem being limited to the production of new side branches and leaves. Bamboos in general are usually monocarpic, living for many years before flowering, then flowering and seeding profusely for a period of 1 - 3 years before usually dying. This pattern can vary - sometimes flowering is sporadic, with plants flowering annually and not dying; at other times it is gregarious with all the plants in a specific species coming into flower at the same time. This species often flowers lightly for a number of years without dying out though it seldom produces viable seed[9]. Occasionally the plants can produce an abundance of flowers and this severely weakens, though does not usually kill, the plants. They can take some years to recover. If fed with artificial NPK fertilizers at this time the plants are more likely to die[9]. Many plants flowered heavily in the late 1980's and are only slowly recovering.

Propagation

Seed - if possible, surface sow the seed as soon as it is ripe in a greenhouse at about 20°c. Stored seed is best sown as soon as it is obtained. Do not allow the compost to dry out. Germination usually takes place fairly quickly so long as the seed is of good quality, though it can take 3 - 6 months. Prick out the seedlings when they are large enough to handle and grow them on in a lightly shaded place in the greenhouse until they are large enough to plant out, which might take a few years. Plants only flower at intervals of several years and so seed is rarely available. Division in late spring as new growth commences. Very easy, single canes of the current years growth can be used. Pot them up in light shade in a greenhouse. Make sure the foliage is not allowed to dry out - misting 2 - 3 times a day for the first couple of weeks following division can be very helpful. Plant out in the summer once they are growing away strongly. Cane layering in May. Detach individual canes and lay them horizontally in trenches 15cm deep. New shoots should arise from each joint. Rhizome cuttings. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Pseudosasa+japonica>

Pollinators

Wind

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]Bamboos. — Lawson. · Faber · 1968 · ISBN - ↩︎Fairly comprehensive, it was once the standard work but is now rather dated. Deals with species hardy in Britain, giving cultivation details and some uses.
  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]Hedges and Screens. — Shepherd. F.W. · Royal Horticultural Society. · 1974 · ISBN 0900629649 ↩︎A small but informative booklet giving details of all the hedging plants being grown in the R.H.S. gardens at Wisley in Surrey.
  6. [6]Shelter Trees and Hedges. — Rosewarne experimental horticultural station. · Ministry of Agriculture, Fisheries and Food · 1984 · ISBN - ↩︎A small booklet packed with information on trees and shrubs for hedging and shelterbelts in exposed maritime areas.
  7. [7]The Milder Garden. — Taylor. J. · Dent · 1990 ↩︎A good book on plants that you didn't know could be grown outdoors in Britain.
  8. [8]The Book of Bamboo — Farrelly. D. · Sierra Club. · 1984 · ISBN 0-87156-825-X ↩︎Very readable, giving lots of information on the uses of bamboos, both temperate and tropical.
  9. [9]The Plantsman. Vol. 1. 1979 - 1980. — ? · Royal Horticultural Society · 1979 · ISBN - ↩︎Excerpts from the periodical giving cultivation details and other notes on some of the useful plants. A good article on the flowering of bamboos.
  10. [10]Ornamental Grasses. — Grounds. R. · Christopher Helm · 1989 · ISBN 0-7470-1219-9 ↩︎Cultivation details of many of the grasses and bamboos. Well illustrated.
  11. [11]Sturtevant's Edible Plants of the World. — Hedrick. U. P. · Dover Publications · 1972 · ISBN 0-486-20459-6 ↩︎Lots of entries, quite a lot of information in most entries and references.
  12. [12]Tanaka's Cyclopedia of Edible Plants of the World. — Tanaka. T. & Nakao S. · Keigaku Publishing; Tokyo · 1976 · ISBN - ↩︎The most comprehensive list of edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.
  13. [13]Plants for Human Consumption. — Kunkel. G. · Koeltz Scientific Books · 1984 · ISBN 3874292169 ↩︎An excellent book for the dedicated. A comprehensive listing of Latin names with a brief list of edible parts.
  14. [14]Chinese Materia Medica. — Stuart. Rev. G. A. · Taipei. Southern Materials Centre · 1911 · ISBN - ↩︎A translation of an ancient Chinese herbal. Fascinating.
  15. [PFAF]Plants for a Future — pfaf.org ↩︎