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Zoysias.com - Quality Grass Seeds And Plugs
Professional Establishment and Maintenance
of Zoysia Grass from Seed
About Zoysia Seed
Most of the zoysia grass seed sold worldwide has been
pretreated, or primed, to improve the germination percentage and
speed, by breaking the natural seed dormancy. This is true for the
improved turf-type varieties, as well as the numerous branded
versions of common Zoysia japonica from Asia. Occasionally, with
some of the newer turf-type varieties, this seed treatment is not
needed based on lab test results. Zoysia grass seed offered for sale,
whether treated or not, should have a germination percentage over
75% to produce good results on a turf project. Pretreated/primed
seed should be planted the same season, not stored for extended
periods of time. Zoysia grass seed from Seedland has been enhanced
for better germination.
Soil Preparation For Zoysia Grass Seed
Cultivate your soil to 6 inches,
incorporating lime, any organic soil amendments and pre-plant
fertilizers as needed or based on soil tests. Zoysia grass
performs best under neutral to slightly acid pH conditions.
Prepare a medium-fine, firm seedbed -
using a light roller on
the finished seedbed is beneficial to level and firm the area.
Planting & Irrigating Zoysia Seed
Zoysia grass seed should be planted in late spring or early summer when nights are warm and daytime temperatures are consistently over 75 deg F (24 deg C) - a warm soil temperature over 70 deg F will produce the best results. Do not seed after mid-late summer, or the slow growing plants will not be well enough established to survive the first winter. Plant 1-2 pounds of good quality zoysia seed per 1,000 square feet.
Cover the seed very lightly with soil by raking or
rolling the turf area - a Brillion seeder also works
very well, if the seed is planted shallow. Zoysia seed
must be planted near the soil surface as it requires
exposure to some light to germinate properly. A thin
layer of mulch or straw can be beneficial in retaining
soil surface moisture during germination. Depending on
rainfall, irrigate the zoysia seed lightly several times
a day to keep the soil surface continuously moist for
the first two to three weeks.
After the seeds have germinated, the watering should be reduced
to less frequent, but longer, deeper soakings to promote development
of a healthy deeper root system. Established, properly maintained
zoysia turf will use far less water than many other turfgrass
Zoysias.com - Quality Grass Seeds And Plugs
Fertilization Of Zoysia Grass
Approximately four weeks after seeding apply a complete,
balanced fertilizer to the newly established turf area.
For faster coverage during the establishment year, a
rate of 1 1/2 pounds of nitrogen per 1,000 square feet
is recommended every month during the growing season.
After the first year, a light fertilizer application
after spring green-up and one in late summer should
suffice to keep the zoysia turf healthy.
When & How To Mow Zoysia Grown From Seed Start mowing the
new zoysia seedlings as soon as they reach 2
inches in height and mow frequently to stimulate
spread and reduce weed competition during
establishment. A turf height of 1-2 inches in
full sun and 2-3 inches in shade will produce
the best results. Zoysia grass turf can be mowed
with any type of mower, but the blades must be
kept sharp to perform well on the tough zoysia
leaves. After the first year, mow as often as
necessary to maintain a healthy turf and good
appearance. Zoysia grass is a slow growing turf
species, allowing for less frequent mowing when
it is maintained correctly.
Pest & Weed Control Of Seeded Zoysia Grass Several weed control
products are labeled for zoysia grass turf during
establishment, as well as for later maintenance. Contact
your local extension office or turf chemical dealer for
specific recommendations in your area. Occasionally
zoysia turf can suffer minor damage from turf diseases
such as Large Brown Patch (Rhizoctonia fungus) or leaf
rust, and from insect pests such as grubs, bill bugs and
mole crickets. Overall, well maintained zoysia turf is
resistant or tolerant to most turf insects and diseases.
This environmentally friendly turf species requires few
chemicals for good growth. Consult your local extension
office or turf chemical dealer for appropriate control
recommendations if needed.
Winter Over Seeding Of Seeded Zoysia Lawns
Both seeded and vegetative
Zoysia grass turf goes dormant during winter, turning a
golden brown color until warm temperatures return the
following spring. Winter over seeding with cool climate
turf species is generally not recommended on zoysia,
especially on newly established turf. Too heavy of a
seed rate application or too invasive of preparation
method can severely damage any zoysia stand. On mature
healthy zoysia, if desired, a fall over seeding
application of perennial ryegrass seed such as Champion
can produce good results, but only seed the ryegrass at
half the normal seeding rate. Due to the density of
zoysia turf, the ryegrass seeds must be raked in well
for good soil contact.
Mixing Or Inter Seeding Zoysia Grass Seed
Seeded zoysia performs
well in a mixture with turf-type tall fescues, as long
as the turf manager maintains a primary fertilizer
schedule in the fall and early spring - do not fertilize
in mid-summer for best results. Tall fescue seeds should ONLY be added after the zoysia has become established.
IMPORTANT ESTABLISHMENT NOTE (Fescue + Zoysia): You must first
establish the zoysia starting at the appropriate time in the spring or early
summer. Once the zoysia has germinated and the plants have grown some you
can plant tall fescue in the FALL (or second fall after planting is more ideal)
after the zoysia has been established. Best to use a slit seeder machine
to plant the tall fescue. DO NOT PLANT the fescue and zoysia at the same time. -
Zoysia must become established first before incorporating the tall fescue.
Planting both grasses at the same time may result in failure of the zoysia seed
plants to establish. If you already have tall fescue established you must
use zoysia plugs instead of seeds.
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