BLACK WALNUT
Juglans nigra Zone 5-8
Black Walnut is a native nut tree of the eastern USA. Black walnuts have leaves
that are compound, with as many as 20 ovate leaflets; they are thin, bright
yellow green above, somewhat downy and paler beneath, and turning yellow in
autumn. male and female flowers occur on the same tree in May. The bark on a
black walnut is a warm medium brown, very rough, with deep short perpendicular
furrows. Black Walnuts can be grown
in nearly all of the country from Florida to California and is hardy enough for
most northern climates though it is rare east of Connecticut. Black Walnut is a large tree growing up to 75' in
height and 3-4' in diameter but sometimes up to 8' in diameter in the Ohio
valley. Walnuts develop a taproot which can make transplanting difficult. If
growing Black Walnuts for transplant at a later time then you should check our
root bags for ease of digging. Known mainly for it's edible nuts which are
almost spherical, 1-3" in diameter or more; the husk is rough dotted dull green,
the shell thick, the meat sweet, rich and oily. The simplest way to shell black
walnut is to dump the nuts on a paved drive and allow the car to drive over the
nuts till shelled. It has been said that it takes at least 80 years to grow a
black walnut to maturity for a saw log, I have a method of production that will
shorten that time drastically, feel free to call for walnut growing tips.
The black walnut wood is deep brown, aromatic, hard, heavy, rather brittle
and coarse grained. Black walnut weighs 38 lbs. per cubic foot. Black Walnut is an excellent choice for deer, turkey and squirrel feed. Nut
production on a mature black walnut can be treemendous.
It is really most happy in the loose gravely soil of stream banks in full sun and other
undisturbed areas but tolerates alkaline and wet soil. Black walnut has a high
tolerance for salt.
Quite a few plants such as tomatoes, alfalfa, potatoes and some pines can
be damaged by juglone, a toxic substance produced by Black Walnut. The Dawes
Arboretum in Newark, Ohio says that, the following plants are not affected by
juglone: Acer negundo, A. saccharum var. nigrum, A. saccharum, Asimina triloba,
Betula nigra "Heritage', Celtis occidentalis, Cercis canadensis, Cornus florida,
Euonymus europaea, E. hamiltoniana, Halesia carolina, Kerria japonica,
Koelreuteria paniculata, Liquidambar styraciflua, Lonicera maackia, L. tatarica,
L. xylosteum, Picea abies, Pinus jeffreyi, Platanus occidentalis, Prunus
serotina, Pyrus calleryana, Quercus, alba, Q. imbricaria, Q. rubra, Sambucus
canadensis, Thuja occidentalis, Tilia platyphyllos, Tsuga canadensis, Viburnum
lantana.
For more information on growing black walnuts see
U of
M.
Black Walnut trees can be messy with the large compound leaves and nut drop. To
buy Black walnut seedlings and transplants use the table below.
Check out our other nut trees.
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| Black Walnut compound leaf w/nut |
Mature black walnut |
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Call for B+B prices.
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568-9179. Phone orders can be charged to VISA, or MasterCard accounts.
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order by mail or prefer to send a check, send orders to:
Porcupine Hollow Farm
8593 W. State Rd. Central Lake, Mi. 49622
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Please include 20% shipping and packaging with
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Minimum shipping $15
Michigan
Residents add 6% sales tax.
