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Site
Selection
When selecting a proper site for your wildflowers, pay close
attention to the existing vegetation. If you have a site that has been used
for a garden or a large open flowerbed, establishment will be easier. Your
site should receive at least six hours a day of full sunshine. Try to avoid
wet areas or low areas that may have accumulated weed seeds. These areas
will promote weed growth that may compete with your flowers.
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Site
Preparation
The most important thing to do to insure success in establishing
your wildflowers is proper site preparation. If the site has existing vegetation
it must be controlled before planting. This may be a lengthy process. Be
sure to start early enough to allow for proper planting time. The most successful
method is with the use of non-selective herbicides such as Round-Up. Apply
the herbicide following the label recommendations when the vegetation is
actively growing. After ten days to two weeks mow and rake up the dead material.
If the site is heavily compacted, shallow tillage is needed. Avoid deeply
disturbing the soil as this will bring up more dormant weed seeds. If soil
does not require tillage, rake the soil to loosen the top one to two inches.
Water the site for an additional week to help germinate the new weed seeds.
When the new weeds have reached two or three inches of growth, repeat herbicide
application. If the use of herbicides is not desired, weeds may be controlled
by tillage. Repeated tillage throughout the growing season will provide
some weed control. Other methods such as hand pulling or close mowing may
also have some success.
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Seeding
After weed control, seeding may start. The bed should be
firm enough that walking on the site will not allow sinking more than half
an inch. If the soil is too loose, walking or lightly tamping the soil will
achieve the required density. Application of the seed can be accomplished
by hand or the use of a hand held or push type spreader. Mixing your seed
with an inert compound such as sand, cornmeal or sawdust will make even
distribution simpler and allow the small seeds to feed through your spreader
easier. After application, lightly rake the seed into the soil. Do not seed
deeper than one eighth to an absolute maximum of one half inch. The seed
must touch the soil.
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Post Planting Maintenance
Your new flowers will need a moist seed bed to allow proper
germination. If rainfall is not sufficient, water enough to keep the site
moist but not wet. Do not apply water in large amounts initially as this
may create a crust that the germinating seedlings may find difficult to
break through. Avoid fertilizer applications as well. High water and fertilizer
will benefit the competing weeds more than the flowers. When the new growth
on on your site is large enough, hand removal of weeds is beneficial. Be
aware that your new seedlings may resemble weeds themselves. A good way
to identify weeds is to prepare your site in order to plant in rows. Anything
germinating outside the row should be removed. Care should be taken when
removing weeds close to flowers to not damage the desired plant. If your
seed mix contains annuals, do not mow until the flowers have finished blooming.
If your mix contains only perennials, mow at a height of six inches or more
throughout the first growing season. Care should be taken to mow before
the weeds set seed to prevent future germination of these seeds. Keep in
mind that perennials take at least two years to bloom and many take as long
as three years to reach full potential.
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When To Plant
The optimum rainfall period, severity of the winter and dormancy
of the seed will determine the most favorable time to plant wildflowers
in your area. Annual wildflowers must be planted in the spring or as a dormant
seeding in late fall. These plants need to reseed for growth the following
year. Planting too late in the spring or summer will not allow enough time
for these plants to mature and develop viable seeds. Biennials can be planted
in the spring or as a late fall dormant seeding. Dormant seeding offers
natural stratification of seeds in the soil over winter months for better
germination in the spring, but early spring weeds may develop before germination.
A late spring planting with preseeding weed control will give better results
and less long term management. The most important thing is to use your own
judgment on planting time.
However, no instructions can be 100% fail proof. This information is given
as a guide only. Local extension service employees or agronomists from the
various conservation agencies should be able to advise you for your area.
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Seeding Rate
The seeding rate is not a set amount. The size of seeds,
the seed species and the amount to be spent are all factors to be considered.
In general, for small areas the amounts are 1 ounce for 250 square feet
or 1 pound per 4,000 sq. ft.
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