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Lately some birches have been known to suffer from a
physiological condition known as "Mouse Ear" which is characterized by deformed
leaves and in severe cases, limb dieback and stunting. River birch is
particularly susceptible to this problem in the nursery. It appears that
this condition is aggravated when soil or substrate pH is too high and/or when
excessive amounts of copper, manganese, or zinc ions are present in the soil
solution. The best theory explaining this problem appears to be that of a
previously unheard-of-physiological disorder, namely: nickel deficiency.
The jury is still out as to whether or not nickel treatments may be the "silver"
bullet to solve this problem. However, attention to this species' cultural
preferences of acidic soils and adequate moisture coupled with the avoidance of
fungicides or culture systems that contain or release excessive Cu++, Mn++ or
Zn++ ions should also go a long way in alleviating this disorder in the nursery.
| CRIMSON
FROST RED-LEAVED BIRCH Betula hybrid 'Crimson Frost'
This selection, probably a hybrid between Betula platyphylla var.
szechuanica and B. pendula 'Purpurea', is a popular choice for its nice
exfoliating whitish/cinnamon bark and deep red leaves the color of which
doesn't fade during the summer. Having originated in Wisconsin, it is easily
hardy to USDA zone 4, possibly 3. It is important to point out that this
cultivar does not possess reliable bronze birch borer resistance and does
require a bit more staking and training than average in the nursery row. It
is, however, an undeniably beautiful tree usually topping out at 30 to 35'
with a crown diameter of about 20'.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.03 |
.98 |
.96 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
No Royalty on this item |
|
|
JACQUEMONT (WHITEBARKED HIMALAYAN) BIRCH Betula jacquemontii (B utilis
var. jacquemontii)
This species hails from the western Himalayas and has proven to be one of
the best and most popular birches in the Western United States. In the East
its use may be somewhat limited by lack of reliable bronze birch borer
resistance. The chief attribute of this lovely tree is its stunning white
bark, said to be the whitest of the birches. Hardy to USDA zone 5.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.03 |
.98 |
.96 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
No Royalty on this item |
|
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DAKOTA PINNACLE® BIRCH Betula platyphylla ‘Fargo’ PP10,963
Dakota Pinnacle® is notable for is unusually narrow
pyramidal habit that borders on columnar. It is not completely
resistant to borers but has a reliably high level of tolerance relative to
seedlings. The dark green foliage is retained later into the autumn
than most birches, even in northern climates. Over the years, the bark
changes from darker orange white tones (on young trees) to an ultimately
yellowish white on mature trees. In trials it has performed very well in
areas of high wind, moderate drought, intense heat and heavy soils with
elevated pH, making it a good choice for many sites in the Midwest and
Mountain states that would otherwise challenge birch trees. The
tolerance to poor conditions, coupled with a unique narrow habit, make
Dakota Pinnacle® an excellent addition to the list of trees for urban
settings. Widely adapted to USDA zones 3/4 to 7/8.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.03 |
.98 |
.96 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
Royalty = $0.75/plant |
|
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ROYAL FROST® RED-LEAVED BIRCH Betula hybrid
This is an improved red-leaved birch developed by crossing the hybrid
Crimson Frost cultivar to B. populifolia ‘Whitespire’. The chief
attribute of this birch is better apical dominance and straighter growth in
the nursery row. From its red-leafed parent it has acquired the desirable
burgundy leaf color that holds well through the summer. Fall color is a good
yellow orange/red. The ultimate height of this tree should be a bit taller
than ‘Crimson Frost’ (topping out at about 40’) with a spread of about 20’.
The bark color is similar to Crimson Frost, white with cinnamon hues. Hardy
to USDA zone 4.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.03 |
.98 |
.96 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
Royalty = $0.25/plant |
|
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DURA-HEAT® RIVER BIRCH Betula nigra ‘BNMTF’
As the name implies, this superior river birch selection from Georgia was
selected for its notable tolerance to summer heat, so characteristic of the
Deep South. Dura-Heat® also boasts a dense canopy, interesting exfoliation
pattern of the bark, and good fall color which has been described as
"butter-yellow". The leaves are smaller than average for the species and are
spaced closely on the shoots, thereby giving the effect of a very dense
canopy, even on young trees. Dura-Heat® is also rated as having greater
resistance to bronze birch borer and leaf miner relative to white-barked
birch species. Adapted to USDA zones 4 through 9.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.08 |
1.03 |
1.01 |
|
Medium (50/flat) |
1.58 |
1.53 |
1.48 |
1.46 |
|
Royalty = $0.75/plant |
|
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HERITAGE® RIVER BIRCH Betula nigra ‘Cully’
This first-class ornamental was named 2002 Urban Tree of The Year
by the Society of Municipal Arborists. The principal reasons for its having
been selected for this honor are its adaptation to the urban environment,
beautiful salmon/white exfoliating bark (which is interesting in all the
seasons and begins at a relatively young age), resistance to bronze birch
borer, and its good form. Other attributes of this fine selection include:
vigorous growth, adaptation to diverse soil types, large dark green leaves,
good yellow fall color, and adaptation to winter cold (to -40°F or lower) as
well as
intense summer heat. This cultivar can attain up to 50’ at maturity with an
oval crown, spreading to approximately 35’.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.08 |
1.03 |
1.01 |
|
Medium (50/flat) |
1.58 |
1.53 |
1.48 |
1.46 |
|
Royalty = $0.25/plant |
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WHITESPIRE POPLAR
(GRAY) BIRCH
Betula populifolia
‘Whitespire’
This
tried and true selection has proven its value in the struggle against
borers. There is some amount of confusion in the nomenclature of this
cultivar: Clonal propagules of the original ‘Whitespire’ selection (a single
superior tree in Wisconsin) are now often referred to as “Whitespire Sr.”
(senior) in the trade. Named varieties of woody plants, especially trees,
almost never “come true from seed”. Unfortunately, seedlings of the true
‘Whitespire’ parent have been marketed over the years as the superior
cultivar ‘Whitespire’. To further compound the confusion,’Whitespire’ was
originally thought to be an Asian white birch (B. platyphylla), but
has since been identified as being a poplar (or gray) birch (B.
populifolia), which also happens to be a species native to the United
States. As a result of these unrelated naming issues, some growers refer to
seed-propagated trees of B. populifolia as Whitespire birches
(implying that Whitespire is the common name for the species). Because
Whitespire was the originally-intended cultivar name for this superior
upright-pyramidal tree with its bright white, non-exfoliating bark, we have
elected to retain it. Whitespire poplar birch is best adapted to northern
climates, from USDA zones 4 to 6, possibly into some parts of zone 7.
|
Quantity: |
<1,000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.23 |
1.13 |
1.08 |
1.03 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
No Royalty on this item |
|
|
SUMMER CASCADE RIVER BIRCH
Betula nigra
‘Summer Cascade’ PP15,015
A weeping form of river birch from
North Carolina will make a large mounding shrub if left to its one devices.
It can be trained to any height by staking and allowed to trial from there.
It also has flexible new growth that will lend it to sculpting in any shape
for even more creative applications. The fast-growing plant tolerates wet
soils and summer heat. USDA hardiness zones 5-9.
|
Quantity: |
<1,000 |
1.000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.23 |
1.13 |
1.08 |
1.06 |
|
Medium (50/flat) |
1.63 |
1.53 |
1.48 |
1.46 |
|
Royalty = $1.00/plant |
|
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FOX VALLEY® RIVER BIRCH Betula
nigra ‘Little King’
This dwarf river birch was selected in Oswego, Illinois based on its eye-catching
compact growth habit. It has also proven adaptable to various soil types
as well as resistant to pests and diseases. Besides its unique and
outstanding growth habit, it also displays attractive salmon-orange and
cinnamon red patterns from its exfoliating bark. This trait begins at an
early age. In ten years, you can expect 8’ to 10’ of growth in both
height and width. Should be adapted to USDA zones 3 to 8.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.23 |
1.13 |
1.08 |
1.06 |
|
Medium (50/flat) |
1.63 |
1.53 |
1.48 |
1.46 |
|
Royalty = $0.35/plant |
|
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WHITE SATIN™ BIRCH
Betula hybrid ‘White Satin’PPAF
Another fine
borer-resistant selection from Wisconsin, but of unknown parentage. White
Satin sports beautiful satiny white bark contrasted to its large dark green
leaves. The habit is nicely pyramidal, topping out at 35’ in height by 20’
of spread. Hardy to USDA zones 4 (possibly 3) to 7.
|
Quantity: |
<1,000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.18 |
1.03 |
.98 |
.96 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
Royalty = $0.60/plant |
|
|
PRAIRIE DREAM®
PAPER BIRCH
Betula papyrifera
‘Varen’ PP15,768
This
has got to be the most stress-tolerant named variety of paper birch
available. Selected from a seed source in the Kildeer mountains of western
North Dakota, it should be able to take any zone 3 winter without problems.
Its bark is a beautiful snow-white, accentuated by its dark green leaves
that take on a nice golden yellow tone in the fall. After 25 years of
evaluation in North Dakota, no damage from borers or cold has been seen.
The growth habit is semi pyramidal to upright oval which lends to growing it
either as a single-trunked specimen or multi-stemmed.
|
Quantity: |
<1,000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/Flat) |
1.23 |
1.13 |
1.08 |
1.03 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
Royalty = $1.05/plant |
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RENAISSANCE PAPER BIRCH SERIES
Betula papyrifera
This series represents an exciting development in the
history of paper
birch; beautiful clonal selections which posses bronze birch borer
resistance. Both are rated hardy to
USDA zone 3 to 7.
Renaissance Reflection® Paper Birch ('Renci' PP12,768 )
was the
first release in the series and is characterized by heat tolerance, rapid
growth, and attractive pyramidal habit. The fall coloration is a nice yellow
and its bark becomes a brilliant white. Of the two Renaissance varieties,
this one is the more popular choice for clump or multi-stem applications.
Renaissance Oasis® Paper Birch ('Oenci' PP12,766)
is the most
drought tolerant selection of the series. It has undergone extensive
testing in the heat of southwestern Ohio and is Bronze Birch Borer
resistant. The juvenile bark is also an outstanding reddish bronze
turning white with attractive exfoliation. Because of it distinctive
pyramidal form, Renaissance Oasis® is the best choice for single-stem
specimen use.
|
Quantity: |
<1000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.23 |
1.13 |
1.08 |
1.03 |
|
Medium (50/flat) |
1.53 |
1.43 |
1.38 |
1.36 |
|
Royalty = $1.05/plant |
|
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CUTLEAF WEEPING
BIRCH
Betula pendula
‘Dalecarlica’
The famous cutleaf
weeping birch, features finely cut leaves and a very pronounced weeping
habit of growth, one of the most popular accent trees of all time. The
Cutleaf Weeping Birch has narrowly oval with slender branches with weeping
tips. The deeply but ferny leaves turn an outstanding yellow in the fall.
The Cutleaf Weeping Birch will grow to be about 40 feet tall at maturity,
with a spread of 25 feet. USDA hardiness zone 2.
|
Quantity: |
<1,000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.24 |
1.14 |
1.09 |
1.04 |
|
Medium (50/flat) |
1.54 |
1.44 |
1.39 |
1.37 |
|
No Royalty on this item |
|
|
YOUNG’S WEEPING
BIRCH
Betula pendula
‘Youngii’
Young’s weeping birch
develops a dense mass of growth which clusters at the top of the trunk to
form a dome shaped head with long, pendent, slender branches that often
reach the ground. This easily shaped tree is especially suited to a small
garden with a mature size of 15 feet tall and 20 feet spread. USDA cold
hardiness zone 2.
|
Quantity: |
<1,000 |
1,000+ |
5,000+ |
15,000+ |
|
Small (144/flat) |
1.24 |
1.14 |
1.09 |
1.04 |
|
Medium (50/flat) |
1.54 |
1.44 |
1.39 |
1.37 |
|
No Royalty on this item |
|
|