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The last 10 posts

Wednesday, June 20th 2012, 6:46am

by Wet_Boots

If you got enough capacity, you can add an extra head between the two by the sidewalk.

And de-thatch that lawn.

Wednesday, June 20th 2012, 1:45am

by pman

i live in los angeles county. The soil isn't bad. The rest of the lawn is growing ok.

the water is just not reaching the area around the rotors. and the breezes are blowing back the water and preventing it from reaching the front center of the grass.
the rotors are not designed to spray water near themselves, right? That's why you put them head to head so a neighboring rotor can cover that area?

there does not appear to be runoff. If there were, wouldn't the grass along the sidewalk be nice and green?
Even that part doesn't look too good.


The left front rotor where the sidewalk meets the wall also appears to be blocked by grass blades. I plan on pulling the rotor up and tilt it perpendicular to the slope. Right now, it just pops straight up, perpendicular to the sidewalk.-


Monday, June 18th 2012, 8:54am

by GatorGuy

With your slope you may be losing more to run off than is being absorbed.
You can mix PGJ and PGP. Don't really know why they would.

Look at http://aggie-horticulture.tamu.edu/greenhouse/hortgardens/conservation/agentdemo1.pdf for a short description and survey sheet.
Tuna or cat food cans are best. Don't mix sizes.

What part of the country you in?
I did 5 inspections Saturday. Two of them had the same problem in the same area: corner of walk and drive, extending down walk. Both had good coverage and no real run off. In these cases the daily heat (daily highs since June 1 = 90 to 95, 2.5 inches of rain in one 3 day run) is killing the grass. Irrigation stops about 7 am, by 3 pm the grass in that corner is baking, soil dry, and the concrete holds the heat until late in the evening.

Sunday, June 17th 2012, 8:48pm

by wsommariva

Where do you live and how much water does the grass get. For example, in NJ it's 1 inch per week. If you aren't giving it enough water and since you have a slope.........if that dirt is hard packed the water may just run off...need to fix the soil...maybe peatmoss addition.

Thinking to add a PJG in the middle with the same precip rate is the way to go.

Cantest. Get same size cans like tuna or cat food. Place where you have good grass and bad grass. Run system. If you have all similar levels in the cans, it's a soil problem. If bad grass levels are low compared to the good, add a head.

Sunday, June 17th 2012, 7:53pm

by pman

your pipe not necessarily 1/2". It's just PGJs have 1/2 " inlet
I hope so. I looked at the rainbird control valve today, and it appears it is 3/4"

I finally took a picture of the grass today. See all the grass near the corner sprinklers are spotty and dead.

I don't think the PGJ's are powerful enough. If it's 3/4" pipe, I think it would be best to upgrade the front rotors to PGP's with 2.5 nozzle. Or perhaps put a 4th PGJ on the station in the front center of the lawn ?

The lawn is 35ft wide.

I would have to go all the way up to 5gpm PGJ nozzle to cover that.

For sure, the installer did not put the front corner sprinklers head to head. I only have 2.0gpm nozzles on there right now. That's only 25ft.


Saturday, June 16th 2012, 8:08pm

by spray (Guest)

your pipe not necessarily 1/2". It's just PGJs have 1/2 " inlet

Saturday, June 16th 2012, 6:29am

by wsommariva

You maybe able to mix as long as the precipitation rates are similiar.

But firt try new nozzles at least on one or two heads. If your installer did not give you the sets, they are very cheap to buy.

If nothing works, install an extra head as long as you have capacity.

Saturday, June 16th 2012, 12:27am

by pman

oh man

I just looked at the sprinklers again, and the installer put in PG J's. Not pgp's.

Will switching to PGP's in the front part of the lawn help water it better?

Can I have PGJ's and PGP's on the same station ?

all my pipe must be 1/2" pvc. Can a 3/4" pgp be put on there?

Monday, June 11th 2012, 8:21am

by wsommariva

Try what Boots says.

Monday, June 11th 2012, 2:33am

by pman

I don't think the sprinkler installer put them head to head.

Would blue nozzles help in my case, since the grass is dead near the sprinkler.. ?

based on the birds eye view, the 2 outside sprinklers would not reach each other...