Trees,
Hedges, Shrubs
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page 2
Question:
Can I keep my Alberta Spruce trimmed as a
dwarf plant? It is in a 13 inch pot. Elaine, Norwich,
CT
Mort's
Answer: Alberta Spruce will not survive as a patio
plant in zone 6. Roots will freeze dry. Picies glauca
conica is vulnerable to spider mite in hotter climes.
Although it is a dwarf spruce, it can grow to ten to
twelve feet in 25 years. It does not need to be trimmed
and it is often used as a Christmas tree. Alberta Spruce
has a natural conical growth pattern. There is a dwarf
Norway Spruce that only grows to a foot high. P.abies
pygmaea could be completely covered with straw and burlap
for the winter but it too prefers to be in a garden.
Several other Norway Spruce would not grow as tall as
the Alberta Spruce. P.abies compacta has a globe shape.
P.abies gregoryana grows to two feet with crowded pale
branches. P.abies nana has yellow-orange leaves and
grows to two feet. A very dense P.abies maxwelli has
a flat form and grows to two feet. Since Noway Spruce
grow to 150 feet, these varieties are truly dwarf. Spruce
prefer an acid soil and urns are alkaline and too restrictive
of the roots.
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Question:
Can I keep my Alberta Spruce trimmed as a dwarf
plant? It is in a 13 inch pot. Elaine, Norwich, CT
Mort's
Answer: Alberta Spruce will not survive as a patio
plant in zone 6. Roots will freeze dry. Picies glauca
conica is vulnerable to spider mite in hotter climes.
Although it is a dwarf spruce, it can grow to ten to
twelve feet in 25 years. It does not need to be trimmed
and it is often used as a Christmas tree. Alberta Spruce
has a natural conical growth pattern. There is a dwarf
Norway Spruce that only grows to a foot high. P.abies
pygmaea could be completely covered with straw and burlap
for the winter but it too prefers to be in a garden.
Several other Norway Spruce would not grow as tall as
the Alberta Spruce. P.abies compacta has a globe shape.
P.abies gregoryana grows to two feet with crowded pale
branches. P.abies nana has yellow-orange leaves and
grows to two feet. A very dense P.abies maxwelli has
a flat form and grows to two feet. Since Noway Spruce
grow to 150 feet, these varieties are truly dwarf. Spruce
prefer an acid soil and urns are alkaline and too restrictive
of the roots.
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Question:
I have one of those dwarf apple trees with
5 different apples. It got an orange colored spotting
in the last month. This is the second year that we have
had the tree. What can I spray the tree with to get
rid of it? James, Groton, CT
Mort's
Answer: You have a rust. You will need to prune
the tree to build it¼s strength. Newly planted
material was easily stressed by the dry spring and early
summer. Stressed plants are very vulnerable to insect
and fungal infection. Your first order of business will
be to fertilize the roots. Make 8 holes in a circle
about two feet on each branch this winter. All upward
shoots should also be cut out. A scaffolding of 5 major
lateral branches should be developed over the next 5
years. All flower bearing branches should be developed
over the next 5 years. All flower bearing branches should
come off these 5 lateral branches. Lastly, you will
need to spray very often to produce disease free fruit.
When the leaves drop this fall, you can apply a dormant
oil spray. It should be 65 for 4 days to be effective.
If you miss this opportunity this fall, you can catch
it this coming spring before the leaves come out. In
the spring, you can follow this
up with Bordeaux mix after the flower petals have dropped.
Follow directions on the label for the additional spray
times. You can apply the Bordeaux now to arrest the
rust. I would not plan on getting too many apples for
three years.
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Question:
The lightening split our apple right down
the middle. Will I have any apples and should I cut
it down now? Sharon, Hastings, NEB
Mort's
Answer: I would cut the lesser half off at the stem.
Use tree wax over the cut. Also apply tree wax over
the exposed split that is left. Can you save it? Maybe.
Should you try? Yes. You will need to fertilize as instructed
in the above question. You will need to prune more severely
because a lot of energy will be needed to restore the
tree to health. The apples will ripen but they may be
a lot smaller unless you do the recommended treatment
soon.
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Question:
When is the best time to trim evergreens like arborvitae?
James Morristown, TN
Mort's
Answer: You should wait until the new growth has
fully emerged. At that time, you can cut the protruding
tips of the branches. You should cut the Junipers, yews,
Chaemycyparis, arborvitae and the like at least 4 times
a year, if you want them to maintain their shapes. Pine,
spruce and firs can be cut in the late fall each year.
I rarely cut my pines and like evergreens at all. Since
I do not try to keep the tight shapes on the arborvitae
like evergreens, I will generally cut just their tips
during the summer months. You must be careful not to
cut too deeply into arborvitae and other hedge type
candidates. If you will notice that inside these finely
sheared specimens, there are no leaves. Since the sunlight
cannot penetrate beyond the tight growth, there isn¹t
any chlorophyll being manufactured by the plants. If
you cut beyond this stage, you can severely damage your
plants, especially in the winter and early spring. On
pines and their like, the branches are further apart
and most often growth can be regenerated in the interior.
It is no problem with deciduous trees and shrubs, if
you cut them back a foot or so.
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Question:
Our three foot pyramidal arborvitae are coming
apart. There seems to be two main stems. Can we prune
them? Priscilla, Norwich, CT
Mort's
Answer: I would cut hem back in two steps. I would
cut the taller ones back 6 inches in the spring. Cut
the other side back a foot in mid August. Keep the outside
trimmed with monthly shearing to keep the growth compact.
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Question:
This past spring I cut back our arborvitae
to within a foot of the ground. This summer they didn't
do anything. They got worse. My grounds are very shady.
What could replace them? Pete, East Lyme, CT
Mort's
Answer: If they are showing some green and do not
have spider mites or galls, then I would wait until
this coming summer before I replaced them. Yews do well
in the shade. Hicks and hatfield yews made a good upright
hedge, when planted four or five feet apart. Large firs
and spruce need to be planted 20 feet apart at a minimum.
The advantage of spruce and fir is that they should
not be trimmed. Hemlock can be cut and are best planted
about 6 or 8 feet apart. Pines will drop a lot of needles
and are best left alone. I would plant pines about 10
feet apart. Do not repeat the scalping in any case.
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Question:
We have a row of 60 arborvitae that are not
doing well. What can we do to liven them up? We want
to use something organic. Fran, East Hampton, NY
Mort's
Answer: You can purchase a load of 5 to 8 yards
of aged manure. You should cultivate in between and
along side the row of arborvitae before applying a good
three or four inches of the gold. Be sure not to get
it within three inches of the trunk. This should spruce
them up before they pine away.
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Question:
My arborvitae are all brown at the bottom.
It seems to be getting worse. What could be the problem?
Frank, East Hampton, NY
Mort's
Answer: First, I would check for spider mites. You
should open a white sheet of paper under a partially
green leave. Shake the leave. If there are red spot
on the paper after you have folded the paper in half
and rubbed it together, then you will have to spray
with Kelthane or some other miticide. Next I would check
for grubs eating the roots. This is best done in the
early fall. Dig a hole along side the root to a depth
of 18 inches. If you see the little shrimp like pests,
use a dursban powder. Follow directions on the llabels
in each case. You should also fertilize with 10-6-4.
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Question:
When can I transplant Bearberries? Kent,
Sandwich, MA
Mort's
Answer: Arctostaphylos uva-ursi is a prostrate shrub
with 5 to 6 foot branches that will root at the joints.
Unfortunately, they can only be cut and transplanted
in the winter when they are frozen. It has a bronze
color in the winter and white or pink flowers in summer.
When the clumps are dug, they can be held in a 50/50
mix of sand and peat until spring. After some roots
are established in the new soil, you can place them
in the new locations. There is a medicinal plant also
called Bearberry that grows to forty feet. Cascara sagrada
or Chittamwood can be transplanted in spring or fall,
when defoliated. Rhamnus purshiana is native from British
Columbia to northern California and Montana.
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Question:
We have some bittersweet vines that have
not bloomed this year. This is the first year in 20
years. What is the problem? Ruth, Kewanee, IL
Mort's
Answer: Your soil is depleted of phosphorus and
potassium. The excess water this year may have leached
out many minerals. Some 5-10-10 fertilizer applied under
each plant will wash into the soil with the repeated
rains.
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Question:
My Buddleia has grown to seven feet but still
does not bloom. Any suggestions? Michele, Edgefield,
SC
Mort's
Answer: Butterfly bush will do better, if cut back
to a few inches from the ground each fall or early spring.
A good mulch of bonemeal, aged manure and some sand
will protect it in colder climates and enrich the soil
with available phosphates. Phosphorus is essential for
blooming. Some soils do not free the phosphorus that
are in most soils. Buddleia do not like heavy soils.
If your soil is clayey, frequent cultivation should
help.
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Question:
My Burning Bush has not been very red this
fall. Can you recommend something? Gail, Old Saybrook,
CT
Mort's
Answer: Your Euonymous americanus, E.alatus or E.
atropurpureus are called burning bush. E. alatus has
the winged spindle branch with yellowish flowers and
a purple berry. E americanus aka strawberry bush has
greenish flowers with pink like berries. E. atropurpupreus
has a greenish purple flower with a red berry. All three
will eventually produce that brilliant fall scarlet
leave. E. alatus may be later in maturity but the delay
has more to do with the southern exposure. In the meantime
you can add some iron sulfate, bone meal or a pinch
of epsom salts to the soil. These minerals help bring
color to most plants.
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Question:
Our Crepe Myrtle has what appears to be white
fungus growing on the leaves. It has affected the flowering.
How can we get rid of it? Huff, Douglasville, GA
Mort's
Answer: If there is a white mass at the joints,
the Lagerstroemia indica has mealybug. Malathion should
correct this. If the white powder is at the middle and
end of the leaves, your Crepe or Crape myrtle has indeed
a fungus. Captan, ferbam or benlate are all excellent
fungicides. A home orchard spray will correct both the
mealybug and the fungus. Follow directions on the labels.
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Question:
We have two mature Crepe Myrtles that are
showing sawdust and holes in peeling bark. Our neighbor
is also troubled with the same symptoms on smaller Crepes.
What is it and how do we remedy the problem? Karen,
AOL
Mort's
Answer: It appears from your description that the
trees have earwigs. Mature trees can be mended with
tree surgery. A leaf shaped incision that is contiguous
is needed to cover the entire infected area. You may
need an arborist to perform this procedure. All the
brown wood must be removed from the area. If the earwigs
completely encircle the inner bark, the trees will succumb.
You can cut entire branches below the infected cambium.
Younger Crepes will grow back easily. This may not be
as easy with mature single stem trees. You can inject
malathion in the holes in the meantime. If you decide
to cut below the area, you should include spraying.
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Question:
Can you help me with my Crape Mrytle and
Bottlebrush? The new myrtles are 2-3 feet and the older
are the same as the Bottlebrush at 5 feet. John, Brunswich,
GA
Mort's
Answer: Lagerstroemia indica, which blooms white
(alba), red (rubra) and purple (purpurea), can be cut
to the ground, when they are only two or three years
old. The 5 foot Crape Mrytle can be cut at the ends
in the late summer, when the bloom is gone. Callistemon
will grow in almost any soil, like the Lagerstroemia.
C. rigidus grows 6-10 feet. C. coccineus to 15-25.C.
lanceolatus 10-30. All three have the rich red spikes
of stamens. C. speciosus grows 10-30 feet with yellow
anthers inside the red stamens. I would not cut the
bottle brush at all unless the branches become wild.
These large plants can be cut in the fall, if needed.
Crape Myrtle can be trained as a tree or grown as a
large shrub like the bottlebrush.
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Question:
We have a Flowering Crab that is five years
with a three to four inch stem. There are some holes
in the bark. What can we do to eliminate this? Jim,
Wakefield, RI
Mort's
Answer: Earwigs are quite common pests that eat
their way into the inner bark of trees. You will need
to cut a incision into the bark to carve them out. If
they girdle the inner bark, they will eventually kill
the tree. This tree surgery can be performed by an arborist
or you can make the necessary cut yourself. With a sharp
razor knife or linoleum knife make a leave shaped incision
that encompasses the entire affected area. Cut out all
the brown wood and scrape as deep into the white wood
as needed. There must a continuous line from the top
of the leave shape to the bottom and back to the top
again. If there are no ants around, you probably have
rescued the tree. Ants feed on the earwig eggs. Dab
the hole with malathion and cover with a tree wax. This
will help seal the wound and keep the earwigs from barking
up the wrong tree.
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Question:
We are moving to Conway, NH. We have been told that
Red Maples and Dogwwod will not grow there. What
else besides Flowering Crab would grow? Jim, home.com
Mort's
Answer: There are some dogwood, hawthorn , cherry
and Mountain Ash that will grow in zone 5 Cornus mas
is a small dogwwod with little yellow flowers in March
and a red fall berry. C .racemosa or gray dogwood has
white flowers and a white berrry. Cornus alba orTartarian
dogwood grows to 10 feet with a blue -white berry and
an inch wide white flower. C.alba argenteo-marginata
has white edged leaves. C. alba sibirica has red twigs
and C. alba spaethi has yellow edged leaves. Mountain
Ash with a white flower and orange-red berry in the
fall, Sorbus americana grows to 30 feet. Sorbus aucuparia
has flower clusters that are6 inches wide. It is also
known as the Rowan tree with deep red berries. The Prunus
genus has many flowering specie that will grow south
of the White Mountains. Rosebud cherry, red plum, bird
cherry, flowering cherry ,sloe and St. Lucie cherry
are all suitable flowering trees for your garden in
New Hampshire. Prunus mahaleb is very hardy and used
for grafting stock. Commonly known as St.Lucie cherry,
it had finger shaped sweet scented white flower clusters.
Bird cherry or P. padus grows to 40 feet with fragrant
white flowers and a small black berry. P. pennsylvanica
gows to 25 feet with a red berry and white flowers.
This wild red cherry is very hardy to Canada. P.nigra
will grow north to New Brunswich. Sloe or P. spinosa
will have white flowers before the leaves appear and
have a blue-black sloe berry in the fall for your drinks.
P. subhirtella grows shrub like to 30 feet. This Rosebud
has pink flowers and comes in a weeping form ( P. subhirtella
pendula) or autumn flowers (autumalis). P. sieboldi
is another white or pink flowering cherry that also
blooms double. Hawthorns are hardy in zone 5, Two English
hawthorn that will do well in 5 include the Crataegus
monogyna and C.oxycantha. C. monogyna has many varieties
in pink, white, red and double flowers. it is a smal
shrub like tree that will grow to 15 feet. C. oxycantha
grows to 30 feet and some have droopping branches and
fern like leaves. both have red fruit. Pear haw or blacktorn,
C.tomentosa grow to 15 feet with orange-red fruit. C.
crus-galli grows to 30 feet with many thorns. Cockspur
thorn is hardy to Canada.
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Question:
We have a Japanese FL.Cherry that did not
do well about a month ago. Now it is flowering for the
second time this year. What is happening? Jim Watertown,
NY
Mort's
Answer: Your Cherry went into dormancy during the
recent dry spell. Extreme dryness or cold will put many
plants to sleep as a protection against dehydration.
The rains stimulated the tree into a spring like action.
This flowering should not be very heavy. The tree should
right itself and produce buds for next spring.
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Question:
How should I fertilize my cherry tree ? It's
about 3" in diameter a the stem. Bill, Oak Ridge,
TN
Mort's
Answer: Drill a half dozen holes with a tire iron
or some other like instrument about 3' from the stem.
Each one foot deep hole can be filled with the formula
mentioned for roses added to an equal amount of 5-10-10
fertilizer. This should suffice for 5 years. At that
time you can double the holes, the distance from the
stem and the depth of the holes.
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Question:
When can I plant my horse chestnut? Rocco,
New London, CT
Mort's
Answer: You could put it in the ground, when you
plant your tulips and other bulbs. Chestnuts can be
planted 6 inches deep in a sandy soil. If you could
mix a third of the soil with sand, this will help your
nut get off to a great start. Be sure to plant in an
area that has a lot of space. Aeculus glabra (the Ohio
buckeye) grows to 30 ft. A.turbinata (Japanese horse-chestnut)
grows to 80 ft. The Sweet buckeye reaches 60 ft. These
trees throw a dense shadow and drop a lot of nuts.
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Question:
I¹ve got three American Chestnuts that
are loaded with chestnuts. They are almost hitting the
ground. When should I pick them? Are they edible? Can
I cut the lower branches? Mary, Waterford, CT
Mort's
Answer: Usually, when the first frost hits or when
the chestnuts start falling is the best time to pick
the chestnuts. American chestnuts are now generally
15/16 ths because of the cross breeding to build resistance
to the blight. You are fortunate to have one of the
new breed. Yes, they are edible and can be used with
coffee, if ground. Some folks add a confectionery glaze
to the whole nut. Chinese chestnuts are bitter by comparison
but are also edible. Italian or Spanish chestnuts are
the ones most available as roasted chestnuts in New
York. You can cut the lower branches, if you prefer
the tree form. I like to prune in the late fall or early
winter. You should paint the cuts to prevent infections
from the fungus.
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Question:
What cause the color changes in leaves in
the fall? Charlotte, North Kingstown, RI
Mort's
Answer: Green chloroplasts dominate the pigmentation
in the plants during high light intensity. When the
days get shorter, the yellow, red orange and purple
chloroplasts take over. Also the starches in the some
plants turn to sugar,which enriches the whole process.
This trick is duplicated in the firing of flower bracts
that are forced to have poinsettia for Christmas or
Easter.
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Question:
What plants are deer resistant? We have tried
all kinds of sprays without success. Kathy, Old Lyme,
CT
Mort's
Answer: Deer will eat almost anything, if the snow
cover limits their hunger. Broad leaved evergreens (Azalea,
Rhododendron, Mountain laurel) are poisonous but deer
will sometimes chew them as well. Plants with thorns
like Pyracantha and barberry are usually the last to
be eaten. Conifers and other evergreens can survive
the nibbles of the deer animals. These tasting of evergreens
can amount to a mere pruning of the branches. Destruction
of the plant occurs, when the eating girdles the bark
on the trunk. When the bark can no longer cover the
fibrovascular tubes to the leaves, the tree or shrub
will die from a lack of nutrient and water. Refrain
from planting trees and shrubs that have bark that is
easily accessed by the deer or rabbits.
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Question:
We did not get a lot of flowers on our 10 foot Kousa
Dogwood this year. There does not seem to be
any sign of disease. Any suggestions? Marsha, Matunuck,
RI
Mort's
Answer: New England suffered a damaging winter for
a lot of plants, including Rhododendron, Mountain Laurel
and many dogwoods. You could add some 5-10-10 to the
soil to help produce more flower buds. Do not use a
liquid fertilizer. Make a half dozen holes in a circle
about three feet from the stem. Go down a foot with
a tire iron or similar tool. Fill the holes with the
fertilizer. This will be good for five years.
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Question:
We have a Silver King Euonymous that has
little tiny bugs need the tips of the leaves. How can
we get rid of them? Diane, Pawcatuck, CT
Mort's
Answer: Malathion is the most effective spray for
aphids. Add a tablespoon of liquid soap to the gallon.
Follow directions on the label. Repeat application with
10 days.
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Question:
We have a great deal of wind across our property.
What evergreen screen can you recommend? Debbie,
Mt. Pleasant, OR
Mort's
Answer: Norway Spruce and Noble Firs have enough
space between the branches to allow the wind to go through.
Norway have wonderful pendulum lateral arms that can
wave in the breeze. Another spruce, Picea pungens or
Blue Spruce is sufficiently spaced to allow the wind
to go through it¹s handsome branches. Koster Blue
Spruce also has pendulous branches. Abies concolor is
another well spaced fir. I would recommend the Japanese
Black Pine as the best candidate to buffet the wind.
Pinus. thunbergi has a dark green foliage with 4²
cones in pairs in the sheath. It is far more handsome
than the Pitch Pine, which is far more common on the
east coast. P. rigida is also dark leaved like the Japanese
Black Pine but lacks it¹s beauty. Both Pines are
better suited to the wind swept area that you inhabit
.Drainage is important for your pines. All pines are
best transplanted, when the soil is moist. I definitely
would not use Junipers or Hemlock. Both will dry out
in the wind. Hemlock will become stressed and vulnerable
to wholly aphids. Juniper can probably survive the wind
especially, if they are spaced to allow air to go around
them. They will not be as attractive with their wind
burn.
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Question:
Last year was an unusual year for my fig
tree.This year, I am afraid the season may not be long
enough.Is there anything that I can do to speed up maturation?
Fiore, Marlboro, MA
Mort's
Answer: Move to New Jersey with your fig. Zone 6
is the furthest north that figs can be grown outdoors.You
are at the line between 5 and 6. You could build a greenhouse
and grow bananas and citrus and other tropicals year
round. Each spring you could spread ample amounts of
bonemeal into the soil after you raise the fig from
its burial. Unfortunately, this will only save you a
week or so.
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Question:
Can I take my 5 ft. fig tree indoors instead
of burying it? Joe, Fairhaven, MA
Mort's
Answer: Most fig fanciers find fruition in annual
burials of their beloved figs for protection from the
winter in northern climates. If you decide to bring
it indoors, you need a cool dry cellar or barn that
doesn¼t freeze. Keep it barely alive with three
or four waterings. Eventually, you will have to bury
your fig because it will become too large to bring indoors.
If you had a dirt cellar, you could drag it indoors
each year and have the best of both worlds, figuratively
speaking.
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Question:
When is the best time to cut back my firebush?
Jan, Norwalk, OH
Mort's
Answer: If you cut back the Euonymous elatus or
E. americana at this time, you will remove some of the
fall berries but will do no harm. Unless you are worried
about feeding the birds. You should thin out some of
the whole branches right down to the ground first. This
will make it easier to cut up to 20% off the terminal
shoots. The best time to cut back would be in the winter
after that beautiful red foliage has disappeared.
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Question:
When can I move forsythia? David, Boston,
MA
Mort's
Answer: As indicated in the first question, all
deciduous material has to be foliated. Deciduous means
not green in winter. You could take cuttings in the
meantime. Make a box that is three sided and place it
against the foundation near the water spigot. The box
should be 6¾ deep and filled with coarse sand.
Cuttings are taken from the terminal shoots. Each cutting
should be 8¾ long. Remove the upper two inches
and cut the bottom at an acute angle as possible. Place
the cuttings two inches apart and two inches into the
sand. Water thoroughly and keep moist until roots evolve.
Move the mother plant in October.
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Question:
Can I purchase bees for my fruit trees? We
are seeing less and less bees each year. Pat, Groton,
CT
Mort's
Answer: You can rent bees from apiaries. More and
more orchards now insure pollination by renting bees.
It would also be wise to plant clover under the trees.
This will attract the bees and their sons. Clover also
provides nitrogen in the soil for the fruits.
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Question:
Can I prune my hollies now (September)? Bob,
Atlantic City, NJ
Mort's
Answer: If you wait a little longer the berries
will be red. You can do no harm by pruning now. Remove
the tangential branches at the intersection and make
a clean flush cut. Hollies make excellent decorations
at Thanksgiving and Christmas.
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Question: We have some holly trees that
bloom in the back of the house. The holly in the front
of the house doesn¹t bloom. It is over 10 years
old and hasn¹t produced berries. We constantly
trim it back to two to three feet. What can I do to
make it bloom? Maggie, Middletown, RI
Mort's
Answer: You can hardly expect a bloom, if you continue
to prune it so severely. You are defeating your purpose
by keeping it at three feet. You need a flower to produce
a berry. If it is a male, it will produce pollen for
the females at the back of the house. There must be
another male within 500 feet for the females to produce
flower and berries. If you can not let the emasculated
plant grow in the front of the house, move it to another
location. In the new location it can produce the flowers
in the spring that bring forth the fall berries on all
the female plants, which may include itself.
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Question:
We have holly near the garage in partial
shade. Since we planted them three years ago the color
has become more and more pale. I do not see any sign
of insects. Any ideas? Patricia, Westerly, RI
Mort's
Answer: Leaching from the cement will change the
PH from acidic to sweet. Since holly and other broadleaf
evergreens require acidic soil around 5.5 or less, this
condition will continue to deteriorate. Nitrate of soda
will help counteract this leaching. I strongly suggest
moving them to more favorable environment for the long
haul.
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Question:
We have two different of hydrangea. One is
white and the other is blue. Can we trim both? Joe,
Franklin, CT
Mort's
Answer: A large white ball is the Hydrangea paniculata
grandiflora and it likes the sun. It can be pruned to
have one stem. Cutting in August will allow growth of
buds for next spring. H. hortensia is the blue or pink
herbaceous hydrangea. It does best in the shade in New
England. If planted in the sun, do not cut it back to
11 inches from the ground until next spring. If in the
shade, you can cut it back in the late fall.
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Question:
My hydrangea turned pink for the first time
this year. It is full of flowers. Any thoughts? Jen,
New London, CT
Mort's
Answer: Hydrangea is an excellent indicator of soil
ph. Because of the excessive rain that most of the country
including New England has experienced, the soils have
leached out their natural minerals. New England soils
are iron based. You can replenish them with aluminum
sulfate, ammonium sulfate, epsom salts and iron sulfate.
An inexpensive substitute for iron sulfate is a handful
of rusty nails. I am sure that the soil will return
to acidic within a short time. Pink color can also be
achieved by adding lime to the soil. There is no problem,
if you want to stay in the pink. If you want to add
the sulfates, you will have the blues.
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Question:
I have a blue hydrangea that has yet to produce
flowers. I fertilize regularly with liquid fertilizer.
The plant looks healthy otherwise. What can I do? Sheila,
Charlestown, RI
Mort's
Answer: Your fertilizer is producing to much vegetative
growth. I much prefer to use a granular fertilizer with
a high phosphorus content. Stop the liquid. Use a granular
5-10-10 with a tablespoon of Epsom salts. Your plant
will be happier, when you take care of the root of your
problem.
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Question:
My blue hydrangea has not bloomed this year.
It faces south and I do not cut in back in the fall.
There are a lot of green leaves. What can I do? Veronica,
Westbrook, CT
Mort's
Answer: Wait. This year has been usually cloudy
and rainy. The lack of sunlight in New England has stalled
and diminished many blooms. You can add a handful of
superphosphate or bone-meal under the plant. I suspect
that you will eventually get some late but rather large
flowers this year. Hydrangeas that face south are best
left alone until spring. You can cut them back to the
ground at that time.
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