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FALL OVER-SEEDING   

          Late summer early fall is the best time to over-seed lawns. Soil and atmospheric temperatures are most favorable for optimum seed germination and growth. With adequate moisture, fertilizer and sunlight, the new seedlings will be well established before cooler fall weather sets in. Also, weed competition is less of a factor at this time, giving the grass seedlings a better environment to grow and develop. Spring over-seeding can also be done, but there is more of a chance of weather related problems (heavy spring rains, extreme high temperatures) and weed competition is more prevalent in the spring. Also, spring seeding may interfere with application of pre-emergent weed killers; concurrent application of seed and herbicides is generally not recommended because the herbicides may cause poor seedling establishment. It is best to delay herbicide treatment 4-6 weeks after new grass seed germinates. Midsummer over-seeding can be done, but it is not recommended. Increased chances of disease, heat and drought stress, and weed competition tend to make seedling establishment more difficult. Proper weed control and adequate irrigation are musts if over-seeding is attempted in midsummer.

            Slit seeding with a mechanical seeder is the best method of over-seeding established turf. Slit seeders have vertical cutting blades that cut through the thatch layer and open up a slit or miniature furrow 1/4" in the soil. Slit seeding generally takes less seed than broadcast seeding, because most of the seed gets into the soil so it can germinate. More seed-soil contact means a higher germination rate and a better stand of new grass. It is best to seed in the same "cross hatch" pattern.

            Proper watering is critical to successful over-seeding. Immediately following over-seeding, water heavily to wash grass into slits. Until grass seeds germinate water lightly on a daily basis, soaking first 1" of soil. After grass becomes established water at recommended level for the type of grass planted.  

S22 BLUEBIRD POWER OVER-SEEDER

The S22 Seeder makes turf renovation simple and easy. The S22 is well balanced and portable thanks to the placement of the polymer seed hopper and its folding handle. The seed gate is also adjustable to accommodate a broad range of grass seed.

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                                                                              Last modified: April 10, 2017