When to Plant
Planting warm season perennial grasses should be done when seedlings will have the longest possible period of good growing conditions for establishment. Planting should be timed so that seed can germinate as soon as the favorable growing season begins. Seedling growth may be curtailed by low temperatures, dry weather, or competition from weeds or other vegetation.
Planting in the late spring and early summer is most successful in the southwest were spring rains and summer rains prevail. The exact date depends on the local precipitation pattern, the species used, the method of planting and the time of weedy growth.
In many areas, where fall rains persist and potential frost date is late, (mid November or early December) fall plantings in (late August -September) plantings have been successfull. Fall plantings should be done early enough to allow plant growth 60 -90 days before first frost.

Planting Methods
The two most common methods of seeding perennial warm season grasses are drill planting (row) and broadcast applications. Regardless of the planting method be sure the clods are worked down to a minimum.
Drilling is the superior method because the seed is placed in the soil at a controlled planting depth, thus improving the probability of stand establishment. When using this planting method, the seedbed must be clean-tilled, free of rocks, stumps and other litter. This method is not very suitable for rocky rough terrain, as associated with many range seedings.


Broadcast applications refer to spreading the seed over the soil surface. Broadcast applications can be accomplished through scattering the seed by hand, rotary spreader, with air stream applicator with fertilizer or E-Z Flow type fertilizer/seeder spreaders. Broadcast seeding is seldom effective without some soil disturbance before the seeding operation. Small, slick seed lend themselves to broadcast seeding much better than fluffy seed. Regardless of the method, the seed must have seed-to-soil contact in a very firm seedbed.  Broadcast seeding has a higher probability of success if the soil is cultipacked or rolled before and after seeding.


Seeding Rate

Seeding rates depend upon the species, method of seeding and potential site productivity. Seeding rates of many grass species are based on pounds of pure live seed (PLS) per acre. PLS is the percentage of the bulk seed material that is live seed. This is determined by multiplying percentage germination by percentage purity of the lot of seed. When hard seeds are involved, PLS = (percent germination + percent hard seed ) x percent purity.  A higher seeding rate will help in competing against weed pressure and decrease the time of achieving a complete stand of grass. 

Planting Depth
Optimum seeding depth is dependent on seed size. The maximum depth a that a seed should be planted is 5 times its diameter.  Since smaller seeds have a smaller quantity of stored energy, do not seed them as deeply as larger seed. As a rule, grass seed should be planted ina firm seedbed at 1/4 inches deep. When using a mixture of small and large seed, always plant at the depth of the small seeded variety in the mixture. Planting grass seed too deep is the single most reason for crop failure.

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P.O. Box 101
Lawton Ok. 73502
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