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Site
Selection
Prairie wildflowers do best if they receive full sun all day, but
will thrive with at least six hours of sun daily. Most species are
adapted to average to well-drained soil and are very drought tolerant.
Site
Preparation
Thorough site preparation is critical to establishing
prairie wildflowers. Existing weeds and weed seeds must be eradicated.
Several methods may be used to prepare the seedbed. For small areas,
sod may be removed with a sod cutter or may be smothered with plastic
and/or mulch. For larger areas the quickest, most effective method
is a combination of tilling and herbicide treatments. Repeated tilling
without the use of herbicide can also be effective, and of course
is more environmentally friendly. Depending upon the site, preparation
may be done the same season as planting, but in very weedy areas
such as old fields, site preparation may take one or two growing
seasons.
Seeding
Seeds may be planted in fall or spring, depending
upon site conditions. If the site is weed free by early May, seeds
may be sown then to take advantage of spring rains. Seed can be
sown throughout the growing season, but later plantings may require
irrigation to get established. On weed-free sites a fall planting
can be successful. The advantage to fall planting is that some species
have a higher germination rate following a period of cold weather.
Maintenance
Maintenance the first year consists of monitoring the site for weeds
and , if possible, ensuring the area does not dry out completely.
During the second and third year, watering is not necessary except
during periods of extreme drought. Spot weeding, either by hand-pulling,
cutting, or herbicide will be necessary to control invasive weeds.
After the second or third year, the prairie may be mowed of burned
every year or two to remove weeds and woody vegetation. If mowing
or burning is not possible, this may be done by hand.
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