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Worldwide, there are over 1500 species of bamboos. Bamboos are
among the most useful of all plants. In addition to being
ornamental, their dense root systems make them good for erosion
control. The larger species make excellent privacy screens,
windbreaks, or noise barriers. The smaller species are good as
ground covers. Bamboos are also good as pot or tub plants, indoors
or outdoors. The stems, or "culms", are used for everything from
garden stakes to building construction, water pipe, concrete
reinforcement, fishing poles, and furniture. Many species of
bamboo produce edible shoots. A complete list of the uses for
bamboo would fill a book. The style of growth of bamboos is
remarkable. New shoots normally arise and grow to their full
height and thickness in a matter or 4 to 8 weeks. Under favorable
conditions, the new shoots which arise each year in a bamboo
planting will be taller and thicker than those of the previous
year, until the species reaches its full potential size. Thus, it
is normal for the youngest culms (canes) in a planting to be the
largest, and vice-versa. Under favorable conditions, a species
which can grow 30' tall can be expected to take about 10-12 years
to begin sending up full size culms, if it is started as a small
plant. Larger species will generally take more time than this to
reach full development, and smaller species less.
Most of the species listed in this catalog spread by rhizomes
(underground stems) to form a patch or grove. Many species spread
quite aggressively and can make a nuisance of themselves in
situations where space is limited. A situation which should
especially be avoided is allowing bamboo shoots from your planting
to arise in a neighbor's yard. For the species with edible shoots,
harvesting out-of bounds shoots for food will control spreading.
For other species, shoots appearing where they are not wanted can
be removed as they appear. Among the landscape features which will
generally restrain the spreading tendencies of bamboos are building
foundations, paved areas, mowed lawns, bodies of water or
water-saturated soil, and dense shade cast by plants taller than
the bamboo. Also, bamboos tend to spread relatively slowly up
steep slopes. It has been our observation that the same bamboo
species which will spread rapidly when grown in bright locations
where there is little root competition will spread slowly if at all
when grown where there is some shade and root competition from
trees. If the shade and competition are too intense the bamboo may
not survive at all. It is possible to strike a balance, however,
where the bamboo will remain healthy and make some growth, but at a
much slower rate than it would if grown without competition. If it
is necessary to contain the bamboo in a small area and other means
of checking its spread are lacking, barriers of sheet metal,
hardware cloth, concrete, or fiberglass glazing can be used.
Special rhizome barrier materials are available from some
suppliers. The barrier may need to be at least 3' deep for the
larger species and at least 18" deep for the smaller types. For a
small bamboo species a sturdy container made of a decay-resistant
material (such as plastic) could be buried in the ground to serve
as a barrier. At least part of the bottom of the container should
be removed, to allow for the movement of moisture. Leaving the
outer couple of inches of the container bottom should help to
prevent the rhizomes from escaping. A clean, 55-gallon plastic
barrel, prepared as mentioned above and buried so its top is just
above ground level, should make a fairly good planter even for many
of the larger bamboos.
Bamboos are vigorous, rugged plants. In general, the larger
species prefer to grow in full sun, and the smaller species
tolerate or prefer some shade. The bamboos listed in this catalog
are mostly from temperate regions. Most should grow satisfactorily
in warm climates, but some species may reach their maximum
development only in areas with fairly cold winters. It is best to
plant bamboos which are to be grown outdoors in cold climates
reasonably early in the growing season, so that they have a chance
to become well established before cold weather arrives. Bamboo
plants acquired late in the season can usually be held
satisfactorily in containers, and wintered in a house (in a cool,
bright location) or greenhouse. They can be planted outdoors the
following spring as soon as the danger of hard frost has passed.
In the descriptions, the size of the bamboos is given
in terms of their maximum height and maximum culm (cane) diameter.
Many species of bamboo have not been cultivated enough yet in North
America to really establish their hardiness under our conditions.
Also, it appears that the amount of cold which a bamboo can
tolerate depends greatly on the conditions under which it is
growing. Consequently, we have not assigned zone ratings
to the bamboos in this catalog. Rather, we have listed temperatures which
experience has shown to be the lowest that plants growing under
favorable conditions can be expected to tolerate with only minor
leaf damage. Bamboos can be grown even in areas where the culms
freeze to the ground every winter. They will then behave like
semi-evergreen herbaceous perennials, with green foliage during the
summer and fall, and into winter - until damaging temperatures
occur. Even if the tops winterkill, they generally remain upright
and with the leaves attached, so they remain effective as a visual
screen. With the exception of the smallest species, however,
bamboos will not develop their full potential size or strength if
they regularly suffer serious winter injury. Generally, bamboos
which are rated as being leaf-hardy to +5°F or colder should prove
reliably root hardy in zone 5, as long as they are mulched for
winter. With thorough mulching, they should be root-hardy into
somewhat colder zones.
Bamboos generally insist on well-drained soil. They prefer
moist, rich, soil, but are fairly tolerant of varying soil
conditions. They are considered moderately drought-resistant, once
established. Many bamboo species can be grown either in the ground
or as container plants. It is usually easier to keep bamboos
healthy and prospering by growing them in the ground. We have
included "container" in the key words for some
bamboo species which we believe to be well suited to growing in
containers. For some bamboos which are considered especially good
container plants, see Pseudosasa and Bambusa. As a potting mix for
bamboos, we strongly recommend a mix of ½ coarse sand ("concrete
sand", not "mason's sand") and ½ compost. Commercially available
potting mixes have not, in our experience, given consistently
satisfactory results. Do not over water bamboos, or allow the pots
to stand in water. Keep container plants out of hot, mid-day sun.
Use fertilizer cautiously. For both water and fertilizer, too
little is much better than too much.
Bamboo sizes: The bamboo plants offered here are container
grown, or occasionally field dug and burlapped. The smaller
bamboos (generally, those selling for less than $14.95) will
usually be shipped as 4" or quart pot size plants. The larger
species (generally, those selling for $14.95 or more) will usually
be shipped as 6" pot size plants. In some cases, the bamboos will
be transferred to smaller containers for shipping.
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