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best grass seed plus weed killer

The good news is that if your lawn looks a bit drab and weedy, you can bring it back to life by using “weed and feed” fertilizers and herbicides. Designed to introduce essential nutrients into the ground that accelerate the growth of your grass, these products help you maintain thick and healthy turf, while minimizing pesky lawn weeds.

Cool-season turfgrasses grow best with average soil temperatures between 60 and 75 Fahrenheit. Cool-season grasses thrive in the cooler climates of the Midwest and Northern regions of the United States. Some cool-season grasses are Kentucky bluegrass, perennial ryegrass, and tall and hard fescue.

The right weed-and-product can improve the health and appearance of your lawn. Ahead, get our top tips and recommendations for navigating the available options—and don’t miss our top picks!

Weed-and-feed products come in two forms: liquid and granular. Although the liquid forms are easier to apply and provide faster results, it’s more economical to use the granular form. Spray or liquid weed and feed are designed for small yards.

Choose a weed-and-feed product based on the type of grass you have. Grass species have different nutrient requirements, so not all of them are safe for every species of grass. Using the wrong product can damage your grass.

In general, grass species are divided into two categories: warm season and cool season. The seasons do not refer to the time of year, but the climate and average soil temperature range.

Here is Table 1

The formulation most of you have is the “DF” which stands for “dry flowable” which means it’s small granules that you put in water to make a solution to spray. The concentration is 75% quinclorac.

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So what this is telling us is that you can use Quinclorac 75DF on established grasses listed as “highly” or “moderately” tolerant. That is really all this chart is for. It has nothing to do with seeding, hence the word “established.” But you still have to look at this chart first to find out if you should even use this product in the first place.

So that is my first clue as to the reseed window – it comes from my experience.

So to be clear – you can apply this up to seeding, but once the seed germinates (4-5 days for rye, up to 21 days for bluegrass) you should NOT apply it to weeds until the new turf has been mowed 2-4 times or 4 weeks, whichever is longer. This is because baby grass is weak and can’t withstand/tolerate mesotrione .