Night Watering

lawnboy123June 13, 2006

I've always heard that watering at night is bad because in encourages fungus and disease.

Around here (South Michigan), temperatures typically cool below the dewpoint rather quickly (Due to very high humidity levels), and a typical night will have dew on the plants usually by midnight and remain unil the sun can burn it off the next day.

Do I get a free pass and might as well water at night?

I'm thinking that if the plant leaves are wet all night anyway, I might as well start watering at one in the moring.

I've got 15 zones that need to run for about 25 minutes each to saturate the soil, so we're talking between 5 and 6 hours.

Is this logical?

Thank you for reporting this comment. Undo

I'm in Florida .. growing st augustine so that's my study knowledge.

With Air Temps in the lower 70's at night & if the grass blade stays wet about 8 hours before it sees some sun, is supposedly when the bad stuff starts growing or takes hold anyhow.

So watering after midnight would be fine here .. except we have watering restrictions / schedules that screw up that potential nicety.

    Bookmark   June 14, 2006 at 10:06AM
Thank you for reporting this comment. Undo

Just make sure that the watering stops just about the time the sun comes up so that things have a chance to dry.

    Bookmark   June 24, 2006 at 10:28AM
Thank you for reporting this comment. Undo

A lot of people have heard that. It must be from somebody's uncles brother inlaw.

How many golf courses water all night long?
How many large turf areas like business complexes water all night and part of the day?

Don't over water, but don't worry about what time.

Figure out what time you want the watering to be done, in most cases that is the first shower of the morning. Add up all the zone times and subract that from your finish time and you get your start time.

    Bookmark   June 29, 2006 at 1:35PM
Thank you for reporting this comment. Undo

that is strange b/c the manual for our irrigation system specifically says to water at night, ending right befor the sun comes up...

    Bookmark   July 4, 2006 at 7:50PM
Thank you for reporting this comment. Undo
ralleia(z5 Omaha, NE)

I defer to Jerry Baker (The Impatient Gardener) about maintaining lawns. He says in his lawn book that the best time to water is between 7 a.m. and 11 a.m., but definately finish by 2 p.m. Otherwise, you help the spread of fungus and disease.

So if you have a 5-6 hour watering schedule, it should fit nicely between 7 a.m. and 2 p.m.!

BTW, the golf courses water at night because they can't afford to spray their customers. It's more economical for them to buy and apply lots of fungicide than to drive off patrons.

    Bookmark   July 4, 2006 at 8:49PM
Thank you for reporting this comment. Undo

I'll go with the 7-11 hours, but not about deferring to Jerry Baker. I bought one of his products which was totally useless. Then I found out his advice served mainly to promote his huge family mail order company.

    Bookmark   July 7, 2006 at 4:03PM
Sign Up to comment
More Discussions
Irrigation upgrade - who to call?
My property has an old irrigation system. It works...
cakbu z9 CA
Is it ok to use 16 g wire?
I found a spool of 16g stranded wire under the house...
Making changes of existing irrigation system
Hi folks, am hoping you can help me with these questions. I...
Help identity sprinkler valve
We bought a house last year that has one zone that...
My sprinkler system station stopped working
Hello! I have a problem with my sprinkler system. One...
© 2015 Houzz Inc. Houzz® The new way to design your home™