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Your Garden
The Premier
Gardeners
Guide
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Planting a Fall Garden
Many vegetables are well adapted to planting in the summer for fall
harvest. Planting a fall garden will extend the gardening season so you
can continue to harvest fresh produce after earlier crops have finished.
The fall
harvest can be extended even further by providing protection from early
frosts or by planting in cold frames or hotbeds. Many cool-season vegetables, such as
carrots, broccoli, cauliflower, and brussels sprouts, produce their best flavor and quality when they
mature during cool weather. Vegetables, such as lettuce and spinach,
tend to bolt or develop bitter flavor when they mature during hot
summer weather.
Growing a productive fall vegetable garden requires thoughtful planning
and good cultural practices. July and August are the main planting
times for the fall garden. Planting of quick maturing vegetables, such
as turnips and leafy greens, can be delayed until September.
Be sure to adjust the planting dates for your specific
location. Count backwards from the average
first frost date in your area, using the number of days to
maturity to determine the best time to plant in your area.
Preparing the Site
Before preparing the soil for a fall garden, you must decide what to do
with the remains of the spring garden. In most cases, the decision is
not difficult because the cool-season crops have already matured and the warm-season
vegetables are beginning to look ragged.
Remove the previous crop
residue and
any weed growth. Prepare the soil by tilling or spading to a depth of
at least 6 to 8 inches.If the spring crops were heavily fertilized, you
may not need to make an initial pre-plant fertilization. Otherwise, 1
to 2 lb of a complete fertilizer such as 10-10-10 may be applied per
100 ft of bed space. Thoroughly incorporate the
fertilizer.
Planting the Fall Garden
Direct seeding (planting seeds rather than using transplants) for crops
such as broccoli, cabbage, and collards is often used in the fall.
However, the success of this planting method depends on having adequate moisture available
to keep the young seedlings actively growing after germination.If you
do not have an irrigation source available, you would be wise to buy
vegetable transplants from a local garden center.
Seeds should be planted deeper in the fall because the moisture level
is lower in the soil and the surface temperature is higher. In many
cases, the planting depth may be 1 1/2 to 2 times as deep as for spring planting of the
same crop.Summers can be hot and dry. Soils may form a hard crust over
the seeds which can interfere with seed germination, particularly in heavy clay soil.
Seeds of lettuce and spinach will not germinate if the soil temperature
exceeds 85 degrees F. You may need to cover the seeded area with burlap
cloth, newspapers, or boards to keep the soil cool and moist. Shading
the soil or using a light mulch over the seed row will help keep the temperatures more favorable for
germination. The shading material must be removed as soon as the seeds
begin to germinate.
Another useful technique is to open a furrow, seed, and cover the seeds
with potting soil or vermuclite. Young transplants may also benefit
from light shading for the first few days after transplanting.
Watering/Fertilizing
Most vegetables require 1 inch of water per week. It's best to make a
single watering that penetrates deeply rather than frequent shallow
applications. Young seedlings and germinating seeds may need more
frequent, light waterings. Do not allow seedlings to dry out
excessively. New transplants may also benefit from frequent light waterings until they develop new roots.
Many fall maturing vegetables benefit from a sidedressing with nitrogen
just as do spring maturing vegetables. Most leafy vegetables will
benefit from an
application of nitrogen three and six weeks after planting.
Insects and Diseases
It is not uncommon for insects and diseases to be more abundant in the
fall. Most problems from insects and diseases result from a buildup in
their populations during the spring and summer. There is hope of
keeping these pests at tolerable levels, however, if a few strategies
are followed.
Strive to keep fall vegetables healthy and actively
growing; healthy plants are less susceptible to insects and diseases.
Check the plants frequently for insect and disease damage. When
sufficient damage is detected, use an approved pesticide. You may
decide not to grow vegetables, such as squash, corn, and cucumbers,
that are especially insect and disease prone during late summer and
fall.
Frost Protection
You can extend the season of tender vegetables by protecting them
through the first early frost. Cover growing beds or rows with burlap
or a floating row cover supported by stakes or wire to keep the
material from directly touching the plants. Individual plants can be
protected by using milk jugs, paper caps, or water-holding walls.
Most
of the semi-hardy and hardy vegetables will require little or no frost
protection. Semi-hardy vegetables should be harvested before a heavy
freeze. Root crops such as carrots and radishes should be harvested or
mulched heavily before a hard freeze. The harvest of mulched root crops
can often be extended well into the winter. During mild winters,
harvest may continue till spring.
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