Q. My young fruit tree
suddenly lost its leaves. This happened after I changed to the fall watering
schedule. A couple of weeks ago I had tree service fertilize all my trees and
shrubs including fruit trees. They said
there is nothing in their mixture that could have caused this.
A. Trees and shrubs are normally fertilized in early
spring, not in the fall. There is nothing wrong with fall fertilization but it
should never be done in the fall to plants that are sensitive to freezing temperatures.
spring, not in the fall. There is nothing wrong with fall fertilization but it
should never be done in the fall to plants that are sensitive to freezing temperatures.
When fertilizing in the fall, it is best to wait until
all growth has stopped with only a few weeks remaining before the leaves change
color. The month of November is usually a good time to do this.
all growth has stopped with only a few weeks remaining before the leaves change
color. The month of November is usually a good time to do this.
There are typically two reasons for sudden leaf drop if
temperatures are still warm; soils are overly dry or improper fertilizer
application. I agree with your tree company. There is nothing in their
fertilizer mix that would cause leaves to drop BUT if fertilizer is applied
incorrectly, or the soil is dry when it is applied, then the tree might experience
unexpected rapid leaf drop.
temperatures are still warm; soils are overly dry or improper fertilizer
application. I agree with your tree company. There is nothing in their
fertilizer mix that would cause leaves to drop BUT if fertilizer is applied
incorrectly, or the soil is dry when it is applied, then the tree might experience
unexpected rapid leaf drop.
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| Desert Dawn nectarine leaf drop after drought |
If the soil dries out too much, leaf drop should be
gradual in the fall. Leaves wilt, they turn gray because they are drying out
and they fall from the tree in about a week’ s time. If fertilizer is applied
too close to the tree’s trunk or applied when the soil is dry, leaf drop would
be sudden; “overnight”. Always fertilize when soils are wet and at least 2 to 3
feet from the trunk.
gradual in the fall. Leaves wilt, they turn gray because they are drying out
and they fall from the tree in about a week’ s time. If fertilizer is applied
too close to the tree’s trunk or applied when the soil is dry, leaf drop would
be sudden; “overnight”. Always fertilize when soils are wet and at least 2 to 3
feet from the trunk.
Regardless, I don’t believe the tree has any long-term
damage. To be sure, bend small branches from where the leaves dropped. They
should bend easily without breaking. Supple branches after unexpected leaf drop
in late summer or early fall is a good indicator. This means they will most
likely come back.
damage. To be sure, bend small branches from where the leaves dropped. They
should bend easily without breaking. Supple branches after unexpected leaf drop
in late summer or early fall is a good indicator. This means they will most
likely come back.
The worst time for unexpected leaf drop is in the spring
during periods of active growth. Leaf buds for the following year have not yet
been initiated. In the fall, when the tree has stopped growing but already formed
leaf buds for next year, it would grow new leaves in a couple of weeks if
temperatures are warm and the soil moist.
during periods of active growth. Leaf buds for the following year have not yet
been initiated. In the fall, when the tree has stopped growing but already formed
leaf buds for next year, it would grow new leaves in a couple of weeks if
temperatures are warm and the soil moist.
What to do?
Irrigate the soil above the tree roots with a hose,
flooding the areas where fertilizer was applied. Apply 15 to 20 gallons of
water slowly to these areas. Do it again in one week. New leaves will emerge in
10 days to two weeks. Enough leaf buds will remain unopened for next spring’s
growth.
flooding the areas where fertilizer was applied. Apply 15 to 20 gallons of
water slowly to these areas. Do it again in one week. New leaves will emerge in
10 days to two weeks. Enough leaf buds will remain unopened for next spring’s
growth.