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Semiarundinaria murielae - (Gamble.)Nakai.

Umbrella Bamboo

Physical Characteristics

An evergreen Bamboo growing to 4m by 1m at a slow rate.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil. The plant can tolerate maritime exposure.

Habitats

Woodland Garden; Sunny Edge; Dappled Shade; Shady Edge; Hedge;

Edible Uses

None known

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known

Other Uses

Hedge; Plant support.

Tolerant of wind, so long as this is not too cold, the plant makes a good dense shelter hedge[162]. It blankets noise very well. It needs to be planted fairly densely because it does not spread very quickly, 60 - 75cm is a good distance. The canes can be used as plant supports[25].

Cultivation details

Prefers a damp humus-rich soil in sun or semi-shade[200]. Prefers light shade[25]. Dislikes drought[1]. A slow growing plant, it prefers a position sheltered from cold north and east winds. A very cold-hardy bamboo, tolerating temperatures down to about -22°c. According to some authorities this species is no more than a form of Thamnocalamus spathaceus[200]. Most leaves are produced at the tops of the stems[200]. The plant has a running rootstock but does not spread far in the cooler climate of Britain and never becomes invasive. Produces its new shoots from late April[25]. This species is notably resistant to honey fungus[200]. Plants only flower at intervals of many years. When they do come into flower most of the plants energies are directed into producing seed and consequently the plant is severely weakened. They sometimes die after flowering, but if left alone they will usually recover though they will look very poorly for a few years. If fed with artificial NPK fertilizers at this time the plants are more likely to die[122].

Propagation

Seed - surface sow as soon as it is ripe in a greenhouse at about 20°c. 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 into individual pots as soon as they are large enough to handle. Grow them on in a lightly shaded place in the greenhouse until large enough to plant out, which could be 2 - 3 years. The plants only flower at intervals of many years and so seed is rarely available. Division as the plants come into growth in spring. Take divisions with at least three canes in the clump, trying to cause as little root disturbance to the main plant as possible. Grow them on in light shade in a greenhouse in pots of a high fertility sandy medium. Mist the foliage regularly until plants are established. Plant them out into their permanent positions when a good root system has developed, which can take a year or more[200]. Basal cane cuttings. Rhizome cuttings.

Links

This plant is also mentioned in the following PFAF articles: Hedges and their uses.

References

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[25] Lawson. Bamboos. Faber 1968
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.

[122] ? The Plantsman. Vol. 1. 1979 - 1980. Royal Horticultural Society 1979
Excerpts from the periodical giving cultivation details and other notes on some of the useful plants. A good article on the flowering of bamboos.

[162] Grounds. R. Ornamental Grasses. Christopher Helm 1989 ISBN 0-7470-1219-9
Cultivation details of many of the grasses and bamboos. Well illustrated.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. 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.

Readers Comments

Plants for a Future does not verify the accuracy of reader comments, use at your own risk. In particular Plants For A Future can not take any responsibility for any adverse effects from the use of plants. You should always consult a professional before using plants medicinally.

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