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At our grafting
workshop, a MidFEx volunteer shows where to put the final
touches on a newly grafted apple tree. |
Answers to Common Questions
When
we appear at gardening events, or while reading our e-mail, certain
questions appear over and over again. This page is a collection
of those questions along with our answers.
You can always e-mail us with your questions at midfex7@midfex.org.
However,
the best way to get your backyard fruit growing questions answered
is to come to our events and to join MidFEx.
Is
there any difference in the size of the fruit grown on a dwarf tree
as compared to a standard tree?
Absolutely not. It's the tree, not the fruit, that is dwarfed.
A dwarf tree just doesn't produce as much fruit.
I planted a new apple tree this past summer
and it seemed to take well. Today I accidentally broke off the main
stem. Is it possible to repair this type of damage?
The bad news is you can't really repair
the main stem if it has broken off. The good news is that as long
as the break is above the graft (attachment point of scion to rootstock),
the tree will grow a new leader. You can help this along by pruning
other potential leaders back and allowing just one to grow, preferably
one that is fairly straight and near the center of the trunk. This
leader will thicken in time, and the tree will continue to grow
normally. However, if the break is at or below the graft, the new
trunk will bear the inferior fruit of the rootstock; in this case
the tree should be replaced.
When is the best time to prune a fruit tree
that has been bearing fruit?
If your main goal is to invigorate the tree and
encourage new growth, you should prune when the tree is dormant,
typically in the winter, or at least fairly early in the growing
season. Hardy trees such as apple or pear can be pruned any time
in the dormant period. Cold sensitive trees like cherry and plum
should be pruned closer to the end of winter.
If you are pruning to open up the tree
to more sunlight, the best time would be sometime during the late
growing season ('summer pruning'). This is normally during and after
August, depending on the growing season in your location. The advantage
of pruning at this time is to avoid suckers or 'water sprouts' that
frequently appear when pruning is done in the dormant period.
What can I do to prevent my trees from overloading
and possibly breaking their branches?
The best way to control this is with thinning
of the fruit early in the season. If the fruits are growing in clusters,
try to reduce the clusters to 1 or 2 fruits each. Also spacing between
fruits should be controlled, especially if there are too many fruits
for a given branch size and strength. Not only will this protect
the tree from overload but the remaining fruits should be larger
because the tree's energy will not be excessively distributed. In
general, recommended spacing for apples is 5-8 inches, pears is
4-5 inches, peaches and nectarines 5-6 inches, apricots 2-3 inches,
cherries 1 inch, small plums 1 inch, and large plums 2-3 inches.
What are the advantages of planting dwarf vs.
full size trees?
Typically, the dwarf trees will have a shorter
waiting period for bearing fruit. This could be as much as 5 years
difference in apple trees. They don't spread out as much, so if
space is a limitation, you can get more trees into any given area.
Dwarf trees are typically 20 to 40 percent the size of a full tree.
This translates into advantages when it comes to spraying, pruning,
picking fruit, applying nets, etc. Generally people plant full size
trees if they have lots of space and they want a larger yield of
fruit. Most backyard orchardists generally are better off with dwarf
trees.
Where can I find a supplier for a particular
fruit variety?
The best source of this kind of information
that we know of is the Fruit, Berry and Nut Inventory,
which lists all the Nursery Catalogs and contacts for trees available
by mail order. It is currently in its third edition and is published
by the Seed Savers Exchange
in Decorah, Iowa (ISBN 1-882424-57-3, soft cover). Besides trees
and shrubs, this book also lists sources of rootstock. This book
is available in soft and hard cover at Amazon.com other on-line
bookstores. We also sell copies at our Fall Harvest Festival.
Where can I find more information about grafting
techniques on the Internet?
The following are some web sites which might
give additional information on grafting:
instruct1.cit.cornell.edu/courses/hort400/graftage/home.htm
muextension.missouri.edu/xplor/agguides/hort/g06971.htm
(with sound)
www.extension.umn.edu/distribution/horticulture/DG0532.html
I am having trouble with my fruit tree. Can you
help?
It is hard to diagnose such problems remotely
from an e-mail, but we can try to help if we recognize the symptoms.
However, to make our job easier, you must give as much detailed
information about your tree or bush as possible. Try to include
the particular variety name, what rootstock it is on (dwarf, semi
dwarf, full size tree), age of the plant, and any other data you
may have. Our e-mail address is midfex7@midfex.org
Can you help identify what variety of fruit tree
I have?
This is very hard to do without seeing the
fruit directly, but giving certain information might help, such
as color of the skin, texture (smooth or russet), shape and size
of the fruit, when the fruit is ready for picking (early summer,
etc.). We cannot promise a positive identification, but we might
be able to eliminate varieties.
Can you supply me with scion wood or rootstock?
We are a not-for-profit organization, and
consequently do not sell anything ourselves, except for an occasional
fund raiser like our annual Harvest Festival where we sell apples,
cider, etc. to help support our club. For rootstock, we suggest
Raintree Nursery. For
the last several years we've purchased rootstock for our grafting
workshop from them.
How can I protect my apple trees from bugs and
disease?
Some people try organic pesticides or hang
up sticky traps, which can be found at mail order companies like
Gardens Alive, but in many cases they are only partially effective.
You may need a chemical pesticide to protect your trees. Start with
dormant oil spray in the early spring to kill overwintering eggs
and larvae. Follow up periodically with a fungicide-insecticide
spray. Some of the liquid orchard sprays available in stores are
easy to use and fit this need. Do not spray insecticides when there
are blossoms, as this will kill the bees come to pollinate them.
You also want to keep the trees watered and fertilized as needed.
It sounds like a lot of work, and it certainly isn't a trivial
task. If you want clean fruit and healthy trees, that is your choice.
Be sure not to spray a few weeks before harvest to allow the chemicals
to dissipate, and wash the fruit before eating.
Can I grow a fruit tree from a seed?
Our web site section 'Why
Fruit Trees are Grafted' discourages this effort. However, many
people report good results growing peach trees from seeds. This
is because many of the stone fruits like peaches are self fertile,
and the chances of a outside gene being present to give an inferior
quality of fruit are very much decreased. Trees like apples, which
are not self fertile, will almost invariably yield poor fruit from
a seed-grown tree.
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