Thanks Chris! Good luck with your pre-emergent app!

This is why lawn care sucks. My instructions for the prodiamine I purchased from YardMastery reads like my wive’s divorce papers. It wants you to mix something like 3.6 oz per gallon of water. So to save time I checked the internet to make sure others are doing the same You will see mixing rates of between 1 -2 tsp per gallon which makes life easier AND a big cautionary note that stipulates that over applying at the recommended rates cause soil microbes to consume the product and render your prodiamine barrier useless. So you are applying this application at about 5 times the stated application rate!!! After looking at the cautionary concerns of prodiamine and all the bs about its application I feel like maybe the average person should not go down this road. It’s like your working with agent orange from the Vietnam era just to maybe suppress weeds IF you hit the magic windows of soil temperature and weed germination Once this bottle of crap is done I’m through with chemicals like this that require moon suits and the tons of misinformation to apply. I truly believe you are better off with the post emergent controls from the big box stores because they are diluted to the point of not causing a cancer spot on your lung and they can be hose end sprayed. It’s just not worth the effort dragging a back pack sprayer around hoping you didn’t apply too much product….whatever the hell that is Don’t go down the prodiamine rabbit hole like I did

Thank you, sir! Good luck this fall with your back lawn renovation project and pre-emergent app!

@@yardmastery I'm a little late on the pre emergent but something is better than nothing. The renovation has gone extremely well.

I do too but I still agitate well in the full sprayer.

Thanks, Brett!

Nice! I hope you enjoyed the spray'n pray!

Thanks, bro!

You are approaching the window, we are shooting for soil temps of 55 degrees! Prodiamine will be your product of choice, both granular or liquid would be good. Scott Pucel- Technical Advisor

How did you purchase? I can't seem to find any that will ship to CA.

It doesnt kill anything, so no, no need to stick to the leaf

5.2 g / 1,000 sq ft and you do it twice in spring

You can, that's how I do it.

According to a lot of other reviews the application rate of hose end sprayer is not precise enough and this is a "serious" herbicide so I would follow the pro rules.

​@@hectorrtirado8337 not advisable at all.

It doesn't have to but you'll want to get the application watered in before your next mow after this application.

I followed your instructions and watered it in, then I used drive on the existing crabgrass...

@@jonhawkins2374 Cant use a pre-emergent AFTER weeds show up, gotta use a post.

@@TuMadre1337 Thanks 😊 🙏

No, because you should have already measured the proper amount of product for the area you're spraying. Cross spraying just ensures that the proper amount gets evenly distributed.

You're basically spraying half of the product one direction, then the remaining half the other direction.

I had the same question, but this answer doesn't make sense to me

@@MrFosterForever if you have a 1000sf lot, you should mix 5.2g in 1 gallon of water. Spray half the gallon across the entire lot going N-S. Then spray the remaining half gallon across the entire lot going E-W. You will have effectively sprayed your entire measured product evenly across your lot.

@@nghiaxp3 That makes sense, my problem with it is that EVERY time I have sprayed my lawns with several different products (and their individual rates to gallons to area) I haven't had enough to cover that area with ONE pass in ONE direction so unless I start running while spraying I doubt I'll get two directions whether I split the amounts in half or not.

Do what you need to do to spray half across the entire lot N-S, then the remaining half again across the entire lot E-W. Whether you adjust your walking pace, spray tip, spray pressure, should be up to you and whatever you're comfortable with.

More than likely it didn't have a negative effect but you never know really. Just trust the process and control your controllables. Sometimes the weather will make applications less effective but there is nothing you can do but continue to move forward with your program and hope for the best.

It's better to do it too early than too late. Theres actually something called a split application strategy where you do half the amount well before 55 degrees and the other half about a month later at about 70 degrees. The idea is that this provides protection for a much bigger time window to shield yourself against the fickleness of mother nature

Ground temperature not outdoor temps.

@@aoe2geek My biggest problem now is just after the snows melted, I did a Prodiamine application when the ground temps were at 50 degrees. Perfect, but them a day or two later we got an inch of rain, then another heavy rain a couple days after that. I sprayed twoacres with a Chapin backpack sprayer, and am thinking it's terribly diluted. If I do anoother full strengh application, the ground temps are now above 55 degrees. Damn if you do, damn if you don't.

@@LemonySnicket-EUC Yes, ground temps measured with a meat thermometer

I believe that's true, but the length of time may be different for each grass type and relative to Prodiamine application amount

Yep it does damage the grass some. Enough that weak seedlings won't make it

Yes, it’s prevent seeds from germinating, weeds or grass, doesn’t matter

If you have weeds you can kill them with round up or a weed killer containing 2-4,D, that is your best bet to prep for a seeding. Scott Pucel- Technical Advisor

Yeah... My hydroseeding guy said no preemeegents or any weed care for an entire year afterwards. So none before either.

You really shouldn't use pre emergent if you're planning on seeding. Otherwise plan to wait at least a month before seeding

May need to wait up to 4 months..

Must know square footage before anyone can answer your question.

This was 2 yrs ago. Been done already. I guess better late than never. Thanks anyways.

Highly recommend just buying a big yard tape measurer at your local big box store

@@aoe2geek will do thank you.

that's great, gets it watered in for you.

As long as it rains a half inch or so. You also don't want a down pour situation of several inches for example with runoff. Too much water all at once can be an issue.

I was using the blue tip that came with this sprayer. It was not an aftermarket tip.

.83oz

23.53 grams