In any case I dont want to cut the grass bc I migjt kill the baby grass but leaving tall hinders my seeds. Not sure what to do. Just gonna wait it out. My question is why do people recommend putting fertilizer down at seed time?
If you wait after germination and fertilize, wouldnt trampli2on the yard kill the baby grass? When do you fertilize? Re: When to put down starter fertilizer Post by Harts » Thu Sep 17, pm Adding fertilizer with nitrogen is NOT recommended at seed down during an overseed - for the simple reason that it will force existing grass to grow; something we want to avoid. The problem with starter fert is the name itself. Yes P and is beneficial to new grass for root development. But seed has everything it needs for the first few weeks.
It does not need to be supplemented with NPK. General rule is to apply fert after your first cut. This is where a lot of people make a mistake and let their new grass grow to 4" before cutting it.
New grass should be cut when it is tall enough to mow - usually around 2. Cutting it back to 2" for mows will help promote growth. The ideal situation would be to collect soil and submit the sample s to a test lab as close to the time of establishment as possible. Just be sure to allow time for the lab to process the samples and return your report with phosphorus recommendations. Also, build in a few days to interpret the report and purchase the correct amount and type of fertilizer.
Amounts in excess of 1. Application of a starter fertilizer is not a substitute for the phosphate and potash recommended on your soil test report. This is certainly the case with bio-solids or manure-based composts which contain significant amounts of nitrogen and phosphorus, so a starter fertilizer is not needed.
You should not use starter fertilizer in areas where you cannot control runoff. Nitrogen and phosphorus from indiscriminate use of fertilizers have caused such great environmental concerns that about half the states in the U. If your lawn is not rich in natural organic matter , nitrogen plays an important role. Some research shows little influence of phosphorus on turf establishment in soils containing adequate to high levels of soil-test phosphorus; whereas other studies show benefits even when phosphorus levels are adequate.
Generally, developing seedlings growing in compact soils during cold temperature periods are thought to benefit more from phosphorus in starter fertilizer. The three most important nutrients required for good growth and health of your turfgrass are nitrogen, phosphorous and potassium, which a starter fertilizer contains. There are benefits to incorporating the starter fertilizer into the soil before planting.
When phosphorous and potassium are applied only to the surface of the soil they cannot move down into the soil fast enough. In addition, nitrogen can easily be leached from the soil before the grass even has a chance to uptake its nutrients. The only exception is weed-and-feed products containing the chemical siduron because siduron will not harm the seeds or seedlings. Postemergent broadleaf weed herbicides can be applied after the lawn has been mowed four or five times.
Much of the success of your newly planted grass seed is dependent on proper soil preparation. Ideally, before casting the first seed, you gather a soil sample to get an accurate understanding of the soil's composition. Then, using a rototiller or other device, loosen the soil to a depth of 4 to 6 inches while working in recommended amenities based on the soil sample results. By working these amenities into the soil before planting, you create an environment that encourages a deeper root system for your grass.
When planting use a quality warm-season grass seed such as Bermuda Cynodon dactylon , St. Augustine Stenotaphrum secundatum or Centipede grass Stenotaphrum secundatum.
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