House is in College Station. Is the a good spray on (hook to water hose) product?

No. Never use weed and feed. Do weed treatment and fertilizer separately.

Sweet Kitten Feet said:

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No. Never use weed and feed. Do weed treatment and fertilizer separately.

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Why?

Probably because most of them contain atrazine which will kill shrubs and plants including ornamentals like azaleas.

All I have is grass in my backyard so I use weed and feed back there and never had issues with it. Works fine and is easy.

The main reason is that the timing doesn't line up for both.

Per Neil Sperry:

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If you use a weed-and-feed product, you're either going to be too early for efficient use of the plant food or too late for the herbicide to give you the best results.

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ETA:

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Late February and early March would be prime time for the first application of pre-emergent herbicide, but it's too early to fertilize turfgrass. It is my opinion that these two procedures should be done independently. Applications later in the spring and in late summer could theoretically be of a combined product, but some of us still prefer to do the two processes independent of one another.

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Primarily because weed control and fertilization rarely NEED to happen at the same time. ANd their method of application can be different at well. Do it separately and you'll be much happier with the results.

Fair points… ok- what is a good weed killer that is safe for St Augustine that can attach to a water hose?

Image I think is safe for St. Augustine. May double check the label to be sure. I think is works for St. Augustine, Centipede, Zoysia, can't remember on Bermuda.

A yard that didn't get pre-emergent yet this year is fine for a weed and feed right now. It's time for fertilizer and you likely have a lot of winter broadleafs hanging around that the herbicide will kill.

Let it rip. Then do it right this fall and next year.

Can you recommend a weed and feed?

And assuming this is used on the borders?

I don't know of any liquid weed and feeds and I'd be cautious using a liquid fert if your aren't used to doing it. Many years ago I used Scott's Bonus S and it worked well.

I have a beautiful St Augustine front yard but am completely surrounded by wild grasses. It is a constant battle at the borders every year and even through the grass itself the last couple of years. I pull all the weeds in the lawn itself but the border is like WW1 trench warfare.

Yeah you're fighting an uphill battle. The best defense to weeds is a strong turf. I did some experimenting this year with my yard. I always get yellowing this time every year and I generally green up pretty slow because my house faces west, so I skipped both the fall and this year's pre-emergent apps. My backyard is what it is with my two labs. It always has weeds regardless. My front yard greened up first on my street, has minimal yellowing and the only weeds are in corners of the yard where it's thin because of shade.

I'm assuming you deal with grassy weeds on the borders?

What kind of "weeds" are you talking about? Most of what comes out this time of year will be dead in a few weeks when we start hitting temps above about 80-85 consistently. If you have clover, it is pulling nitrogen from the atmosphere that will become available to your turf as the clover dies back in the heat and degrades. Use a good organic slow release fertilizer like Microlife, mow the weeds down, and water deeply and infrequently and your turf should outcompete the weeds as soon as it warms up a bit more.

Years ago I applied weed and feed in the spring to my St. Augustine yard. It killed everything. Never again.

Weed & feed has atrazine which can kill or severely hurt trees when they are actively growing. Like now.

Sweet Kitten Feet said:

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No. Never use weed and feed. Do weed treatment and fertilizer separately.

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I've used Scott's weed and feed for 30 years on St Augustine and have always had great results.

It's never killed anything but weeds.

Atrazine will kill a 6 year old live oak tree at least in the liquid form if you are a dumb 12 year old and spray it directly on the leaves after your dad ask you to spray it just on the grass. I have used bonus S granules with atrazine for over 30 years on numerous yards with st augustine after this incident and have never killed another tree since. Atrazine will also burn/stun bermuda so if your yard is mixed use caution unless you are trying to get rid of the bermuda. If you don't want to DIY Randy Clark is a true professional in this field of work and great guy to work with

https://thefertilizerguy.com/

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Sweet Kitten Feet said:

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No. Never use weed and feed. Do weed treatment and fertilizer separately.

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I've used Scott's weed and feed for 30 years on St Augustine and have always had great results.

It's never killed anything but weeds.

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Scott's Bonus S works well for me.

If a person cares enough about the yard to look up an annual schedule, cutting heights, and learn about pre and post emergent weed control, they won't use weed and feed.

If not, it's probably the least, worse option. Assuming no trees in the yard.

Where did I say it would kill your grass?

Don't use it around trees.

Sweet Kitten Feet said:

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Where did I say it would kill your grass?

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You didn't. Neither did I.

I said it has never killed anything other than weeds. Plenty here claiming it kills flowers and trees.

Never lost a tree, never had any flowers or shrubs or anything else killed in over 30 years.

Sweet Kitten Feet said:

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No. Never use weed and feed. Do weed treatment and fertilizer separately.

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Used Scott's Weed & Feed on my St. Augustine in College Station for years, with great results. All my neighbors do the same. Two years ago, the granola girl at Lowe's told me how terrible Scott's W&F is, and recommended a combination of regular Spring fertilizer for our area plus Image for nutsedge weeds. For reasons I still don't understand, that killed about 50% of my lawn. I've been layering in topsoil ever since and it is slowly recovering.

Scott's is easy, cheap, and works. I don't need the best yard, just not the worst. But, 25 years of Scott's has kept me in the Top 25% and I have never killed a tree!

Try Nitro Phos, brand, the late great Randy Lemmon knew his stuff.

NitroPhos Feeding Schedule