Yes, winterizer should be applied when top growth has stopped, but the ground isn't frozen. This usually means soil temps are below 50 degrees. Fertilizer burn is more of a concern when it's warmer, but you should definitely water it in, but it's not like a game of beat the clock. You probably want to apply two pounds of fertilizer per 1000 since urea is 46 percent available nitrogen.

How long before kids and pets can walk on the lawn?

Give the lawn about 1/2" of water - then they can go on the lawn.

I just spread some 46-0-0 and followed it up with a nice blast of iron and my lawn is by far the greenest in the neighborhood. Not really sure if the deep green color is attributed to the UREA or the IRON. But man my lawn is greener now than its ever been.

UPDATE*** I put the Urea down the first week of December and followed the guidelines. The ground froze slightly for a few nights in mid to late December but we were slammed with a warm winter after that. My lawn is fully awake now and it is MUCH thinner. What was once a plush 1.2 acres of amazing green goodness, is a weak thinned out lawn with green grass blades mixed with a lot of brown dead blades. Much of the brown that I thought was just dormant over the winter never turned green.

I think the Urea application burned up a lot of the grass. Looks like I need to hope for very little trouble from weeds over the next 5 months and shoot for a fall overseeding.

So what do you all think after the update?

any input?

If you really want to use 46-0-0 on your lawn and don't want to burn it, get a bag of 46-0-0 with Uflexx and apply it at 3 lbs (actual product) per 1k sq ft.

If you didn't fertilize in the Fall and your lawn is pale green right now, you can use 21-0-0 for quick green up and up to 5 weeks of beautiful green color.

How does Uflexx prevent burn? I thought its formulation only reduced volitization and nitrification.

Green... Only thing you care about? "Quick" green? "Green" does NOT equate to healthy and anyone that has an iota of brain matter on this board will attest to that. But, if you're in the habit of wasting money on urea for a fast "green" lawn, that will fail on you unless you continue to dump chems and ferts, enjoy burning your cash. Try some pellets. Cheap, easy, and they work without stressing your grass or your soil's microbes (that you kill using urea). They also add some org matter. Just a thought.

Will not burn if apply according to label. I have used it with great success and have not burn one blade of grass.

This is a slow release 46-0-0 due to Uflexx, VERY different from the regular 46-0-0.

A couple of things came to mind when I saw this board.

First, Tall Fescue does remain green year round, but it isn't actively growing year round. The Nitrogen is used by the plant for chlorophyll, protein production, etc., but is only going to be absorbed during times of active growth when soil temperatures are 60-75 degrees. So, applying high Nitrogen fertilizer when the ground is frozen won't help the turf.

Second, 46-0-0 urea is usually mixed into a solution and sprayed. For example, I will be mixing it with 0-0-62 and a pre-emergent this Spring. This allows me to deliver a balanced fertilization and a pre-emergent at the same time.

The balance in Spring is usually a 2-1 ratio of Nitrogen to Potash delivering 1# of N and 1/2# of K. Also, try to find a slow-release mix as you don't want your Nitrogen level fluxuating dramatically between applications.

I recommend going with a lower Nitrogen count, such as 16-0-8 w/minors (2-1 ratio and usually 30% slow release). Over Nitrogen use actually depletes the carbohydrate reserves in the plant as the growth surges and it struggles to keep up. A steady growth with a good balance of nutrients will give you better color and more importantly, lasting color.

I put a link to a picture of a Tall Fescue lawn I started last Spring. The neighbor had a service that was aggressive in Spring with a lot of N, while my service focuses on nutrient balance and soil structure. The picture is from late June and the lawn does not have an irrigation system. The homeowner just figured we were getting more rain than usual; in actuality we had less during that Spring and Summer than we had since the 2007 drought. in Atlanta.

Here is a link that might be useful:

I have purchased Urea 46-0-0 for my Bermuda lawn. I am having issues with centipede from my neighbors yard invading the bermuda. I read that centipede dislikes high nitrogen and will eventually die .....any suggestions on application for this issue??