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Eastern Red Cedar -
Juniperus virginiana
Family Cupressaceae.
Also commonly called Cedar Tree, Juniper, savin, cedar apple, pencil
cedar, or Virginia red cedar.
Red cedar is a slow-growing, narrow-leaved evergreen growing in a narrow
pyramidal form to 45 feet. Native to North America east of the Rocky
Mountains, and isolated populations in Oregon, this common tree was
revered by Native Americans for its many and varied uses. (1)
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This Morton Arboretum specimen is nearly 60 years old. |
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Red cedar (Juniperus
virginiana) is a
medium-sized
dioecious or rarely
monoecious tree from
10-20 m (33-66')
tall (McGregor et
al. 1986, Stephens
1973). The evergreen
tree is shaped like
a pyramid or column,
with reddish-brown
to grayish colored
bark that is fibrous
and shedding.
Branches are usually
reddish-brown. Leave
are opposite,
simple, green or
blue-green, closely
appressed and
overlapping the leaf
above, scale-like,
and 0.2-0.3 cm
(1/16-1/8”) long or
needlelike and
0.6-1.2 cm
(1/4-1/2”) long.
Male and female
cones are on
separate trees. The
staminate (male)
cones are
yellowish-brown,
papery, solitary at
the tips of
branchlets, ovoid to
ellipsoid, and
0.2-0.4 cm
(1/16-1/8”) long.
The ovulate (female)
cones are solitary
at the tips of
branchlets, dark
blue or
bluish-purple, waxy
and berrylike,
0.4-0.7 cm
(3/16-1/4”) long.
The female cones
ripen from September
through October.
There are 1-3 seeds
per cone. Red cedar
seeds are
yellow-brown and
round, 2-4 mm in
diameter, ridged
near the base, and
sometimes shallowly
pitted.
Distribution
The distribution of
red cedar (Juniperus
virginiana) spans
the U.S. east of the
Rockies. The species
also occurs in
Oregon in the west.
The southern red
cedar (var.
silicicola) occurs
only in the
southeastern US. Red
cedar is a pioneer
species and often
volunteers in old
fallow farm fields
and waste places.
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Leaves scale-like, 1/16" long on
younger branches, needle-like to
3/16" long on older sections of
branches, scales held tightly in
four rows, oval to
lanceolate shape and narrow
acuminate tip (sharp-pointed).
Opposite arrangement.
Uses
Ethnobotanic: The
red cedar is used by
many tribes for
incense in
purification and
ritual (Kindscher
1992). For numerous
tribes, the red
cedar tree
symbolizes the tree
of life and is
burned in sweat
lodges and in
purification rites.
The Blackfoot made a
tea from the berries
of the red cedar to
stop vomiting
(Kindscher 1992). A
Blackfoot remedy for
arthritis and
rheumatism was to
boil red cedar
leaves in water, add
one-half teaspoon of
turpentine, and when
cooled, rub the
mixture on affected
parts. The Blackfoot
also drank a tea
made from red cedar
root as a general
tonic; mixed with
Populus leaves this
root tea became a
liniment for stiff
backs or backache
(McClintock 1909,
Johnston 1970,
Hellson 1974).
The Cheyenne steeped
the leaves of the
red cedar and drank
the resulting tea to
relieve persistent
coughing or a
tickling in the
throat. It was also
believed to produce
sedative effects
that were especially
useful for calming a
hyperactive person.
Cheyenne women drank
the red cedar tea to
speed delivery
during childbirth
(Grinnell 1962). The
Cheyenne, along with
the Flathead, Nez
Perce, Kutenai, and
Sioux, made a tea
from red cedar
boughs, branches,
and fleshy cones,
which they drank for
colds, fevers,
tonsillitis, and
pneumonia (Hart
1976).
As a cure for
asthma, the Gros
Ventres ate whole
red cedar berries or
pulverized them and
boiled them to make
a tea. They also
made a preparation
from the leaves
mixed with the root,
which they applied
topically to control
bleeding (Kroeber
1908). The Crows
drank this medicinal
tea to control
diarrhea and to stop
lung or nasal
hemorrhage. Crow
women drank it after
childbirth for
cleansing and
healing (Hart 1976).
The young leafy
twigs of the red
cedar were
officially listed in
the U.S.
Pharmacopoeia from
1820 to 1894 as a
diuretic (Kindscher
1992). The distilled
oil of the red cedar
has been officially
listed as a reagent
in the U.S.
Pharmacopoeia since
1916 (ibid.).
The wood of red
cedar is very
durable, and was
used for lance
shafts, bows, and
other items. Flutes
made from red cedar
wood were highly
regarded by the
Cheyenne. Cedar
boughs were used for
bedding. The
Menomini wove mats
of cedar bark. The
mats were used for
roofing temporary
structures, for
partitions, floor
mats and wrappings,
and for various
purposes in the
canoes.
Ornamental:
Seedlings of red
cedar are ordinarily
used as stock for
grafting ornamental
juniper clones. Red
cedars are often
used as ornamentals
for their evergreen
foliage. Most
cemetery plantings
include old red
cedar trees and many
younger dwarf
junipers. All of the
native junipers are
valuable ornamental
species, and many
horticultural
varieties have been
developed. Red cedar
is widely used in
shelterbelts and
wildlife plantings.
The close-grained,
aromatic, and
durable wood of
junipers is used for
furniture, interior
paneling, novelties,
and fence posts. The
fruits and young
branches contain
aromatic oil that is
used in medicines.
Wildlife: Red cedar
and other junipers
are important to
wildlife throughout
the country. Their
twigs and foliage
are eaten
extensively by
hoofed browsers, but
the chief attraction
to wildlife is the
bluish-black
berry-like fruit.
The cedar waxwing is
one of the principal
users of red cedar
berries, but
numerous other birds
and mammals, both
large and small,
make these fruits an
important part of
their diet. In
addition to their
wildlife food value,
cedars provide
important protective
and nesting cover.
Chipping sparrows,
robins, song
sparrows, and
mockingbirds use
these trees as one
of their favorite
nesting sites.
Juncos, myrtle
warblers, sparrows
of various kinds,
and other birds use
the dense foliage as
roosting cover. In
winter, their dense
protective shelter
is especially
valuable.
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Establishment
It is especially
well adapted to dry
areas. Red cedar is
generally propagated
by cuttings.
Cuttings are made 5
to 15 cm (2 to 65
inches) long from
new lateral growth
tips stripped of
older branches. A
small piece of old
wood, a heel, is
thus left attached
to the base of the
cutting. Some
propagators believe
this to be
advantageous. In
other cases, good
results are obtained
when the cuttings
are just clipped
without the “heel”
from the older wood.
Cuttings from the
current season’s
terminal growth also
root well.
Cuttings to be
rooted in the
greenhouse can be
taken at any time
during the winter or
rooted outdoors on
heated beds.
Exposing the stock
plants to several
hard freezes seems
to give better
rooting. Optimum
time for taking
cuttings is when
stock plants have
ceased growth (i.e.
the late fall-winter
propagation period
is more successful
than summer). For
propagating in an
outdoor cold frame,
cuttings are taken
in late summer or
early fall. There
may be advantages to
using bottom heat.
Lightly wounding the
base of the cuttings
is sometimes
helpful, and the use
of root-promoting
chemicals,
especially IBA, is
beneficial.
Recommendations for
root-promoting
chemicals include
the following: 2500
IBA Quick-dip
(Alabama), 3000 –
8000 ppm IBA liquid,
and 0.3-4.5 percent
IBA talc.
Medium-coarse sand
or a 10:1 mixture of
perlite and peat
moss is a
satisfactory rooting
medium. Maintenance
of a humid
environment without
excessive wetting of
the cuttings is
desirable, as is a
relatively high
light intensity. A
light, intermittent
mist can be used.
Bottom heat of
60-65°F (12°C) is
critical the first
six weeks of
propagation to allow
the basal wound of
cuttings to callus.
Seed Propagation
Juniperus virginiana
flowers from March
to May. The fruits
should be gathered
in the fall
(September-November)
as soon as the
berry-like cones
become ripe. Red
cedar trees come to
seed-bearing age in
10 years, and they
bear cones every 2-3
years. Seed
collection can be
done by stripping or
picking the berries
by hand from the
trees, or by
flailing the fruits
to ground cloths. Be
careful to pick only
ripe berries. Since
the number of filled
seeds varies widely
from tree to tree,
it is important to
test the seeds by
cutting to determine
percent fill. Seeds
may be stored as
berries or cleaned
seeds.
The seeds can be
recovered by
macerating the
fruits and floating
the seeds to the
top. The addition of
detergent to the
maceration water
helps to separate
seeds from the
resinous fruits. Red
cedar seeds store
quite well. They
should be dried to
10-20% moisture and
stored in a sealed
container at cold
temperatures.
For best
germination, seeds
should be removed
from the fruits,
then the seed coat
is softened by
treating it with
sulfuric acid for
120 minutes. After
soaking the seeds in
sulfuric acid,
follow with 6 weeks
of warm
stratification at 20
to 30°C (70 to
85°F), or summer
planting, then 10
weeks of
pre-chilling at 4°C
(40°F). Use of fresh
seed reduced the
warm stratification
time. Rather than
the acid treatment,
two to three months
of warm
stratification could
be used. As an
alternative for cold
stratification, the
seed may be sown in
the fall.
Germination is
delayed at
temperatures above
15°C (60° F).
Germination is often
delayed in red cedar
seeds, as seeds are
consistently highly
dormant.
Red cedar seeds are
usually sown in the
nursery in the late
summer or fall, but
may be sown in
spring or summer.
The seeds of most
species should be
sown in fall to take
advantage of natural
pre-chilling. Red
cedar seeds are
usually drilled in
well-prepared
seedbeds in rows 15
to 20 cm apart and
covered with 0.6 cm
of soil. In
nurseries with
severe climates,
such as those in the
Great Plains,
considerable care
must be taken to
protect the beds
with mulch and snow
fences.
Viability of the
seed varies
considerably from
year to year and
among lots, but it
is never much over
50 percent. Treated
seed is usually
planted in the
spring, either in
outdoor beds or in
flats in the
greenhouse. Two or
three years are
required to produce
plants large enough
to graft.
Eastern Red Cedar is
available through
most nurseries.
Cultivars include:
Baker’s Blue, Blue
Mountain, Brodie,
Burkii, Canaerti,
Cupressifolia,
Dundee, Emerald
Sentinel, Glauca,
Gray Owl, Hillspire,
Idyllwild, Manhattan
Blue, Mission Spire,
Nova, Pendula, Patt
River, Princeton
Sentry, Royo, Silver
Spreader, Stover,
and Taylor. |
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