Hooking Weed 'n Feed to underground sprinkler?

[RedRooster]

I'm lazy. I don't like standing around spraying my lawn with those one gallon jugs of lawn fertilizer/weed killer hooked up to my hose.

If I were to hook it up to my external faucet(which is split with the single underground sprinkler circuit off a y-connector from the house), turn on the underground sprinkler then slowly turn on the faucet, would the sprinkler circuit suck the stuff out of the bottle like my feeble mind envisions?

The possible problems are: the stuff being sucked back into the house's water if I turned on an inside tap for any amount of time by accident, all the stuff would only come out of the closest sprinkler head to the tap or the jug would blow off the faucet in a giant explosion.

Is this too risky to be monkeying around with?

 

[rivan]

Put a backflow preventer in and you're good to go.

 

[FDF12389]

Put a backflow preventer in and you're good to go.

This.

Your house may already have one, in our area they mandated them a while back.

 

[Wyndru]

The way the external works on our irrigation system is it it output. I don't think it can be reversed, basically it is there if you want to hook a hose to it, or for blowing air into the system to winterize it.

If the water pressure is always pushing out that external faucet, it would fill and just pressurize I would think. I doubt it would ever circulate back into the system unless you had another external spot where you could feed it back into.

[edit] nvm, I didn't read fully. I see what you mean by slowly turning on the faucet AFTER the sprinklers are already running. Interesting, that would be cool if that works! Back-flow preventer definitely though.

 

[RedRooster]

The way the external works on our irrigation system is it it output. I don't think it can be reversed, basically it is there if you want to hook a hose to it, or for blowing air into the system to winterize it.

If the water pressure is always pushing out that external faucet, it would fill and just pressurize I would think. I doubt it would ever circulate back into the system unless you had another external spot where you could feed it back into.

That's true. Getting it in the house was a twist a co-worker threw at me when I brought this up and suddenly concerned me. But it shouldn't go against the flow.

Otherwise, will the venturi(?) effect actually do this at the tap for me, sucking the stuff out of the bottle on the way by? Or will the bottle just fill and blow right off?

 

[paperfist]

Awesome idea!

 

[BoomerD]

+

 

[RedRooster]

Haha Boomer, that's a lot of walking when I could be drinking. Once at the start of the year was enough.

Go on you ah heck neighborhood kids, take a run through my sprinklers!

 

[Dulanic]

+

Works well

 

[highland145]

Broadcast spreader, not a drop spreader.

 

[runzwithsizorz]

Have one for my automatic vegetable garden drip system, but since I only really need to fertilize the lawns 3, or 4 times a year I manage to get off my butt. But whatever, http://www.organicgardengrower.com/ez-flo-fertigation

 

[BoomerD]

Broadcast spreader, not a drop spreader.

I don't like broadcast spreaders for weed and feed. The stuff gets places I don't want it...like my flower beds.

You shouldn't need "weed and feed" more than 3-4 times per year. For me, the granular products are more effective.

 

[Zebo]

How bis is your yard my lazy commrad? I use an ATV and broadcast in tow. They also make leaf/paper/grass picker upper attachment you can tow too.

 

[RedRooster]

Hmm, even dumber of me, I didn't realize they made a weed control in granular. Thought that was all only fertilizer.
I will definately go that route then, the wife can push the spreader around easier than holding the gallon of poison on a hose. I mean I can do that, ya, that's the ticket.

 

[Zebo]

Don't you have any slaves (children)?

 

[child of wonder]

Broadcast spreader, not a drop spreader.

This.

Drop spreaders suck.

 

[RedRooster]

Don't you have any slaves (children)?

Haha, no. Those kind cost money. :ninja:

 

[Theb]

I read Hooking Weed 'n then I was extremely disappointed by the rest of your title.

 

[highland145]

I read Hooking Weed 'n then I was extremely disappointed by the rest of your title.

Looking for Heller posts?

 

[Bryophyte]

Follow the instructions on the weed & feed. Usually you apply to wet grass and do not water for a couple days (or make sure it's not going to rain for a couple days.) The reason for this is that it is usually only taken up by the leaves, not roots, so you want the herbicide to stick to the plant and stay there for long enough for the plant to take it in and translocate it down to the roots.