Want to ping the forum for ideas.  I need to simplify my watering process for my house/dog sitter while on vacation for two weeks next month.  If I ask her to water my 30 pots every 3 days, which takes me about 20 min, I will likely come back to dead fig trees.  My hope was to make something that would allow her to simply turn on the nozzle for a few minutes every few days and distribute water to all the pots.  Is there a simple irrigation system that I can connect to the outside faucet that can route water to all the pots?

Drip line. $40 investment to save your precious plants.
http://www.amazon.com/Raindrip-R560DP-Automatic-Container-Hanging/dp/B00J2NRUBI/ref=pd_sim_86_5?ie=UTF8&refRID=12MP5EWF7CJEMM9KA6RD

I'd recommend a drip irrigation system from Gardena or other. You can connect the system to a timer and it could beneft your every day watering too. Takes a bit of time to set ip, but then is done. Love mine!

if the trees are close together, the simplest, and cheapest way, is to use a lawn sprinkler on a timer.

You can get away with just 1/2" "orchard tubing" as supply line, 1/8" spaghetti tubing for distribution, spot-spitters and an end cap. Easy, you might want to use 2 or more spot spitters/spray stakes on large containers, they also come in different flow rates. Drip just does not work well with coarse mixes, the water needs to be distributed across a good portion of the container to wet it evenly. 

All you do is punch the hole in the 1/2" line (works best if you have the water on) then jam the 1/8 line in the hole, cut it to length and connect a sprayer. I usually walk along the lines and check that they are all working. 30 is about the max I can run on a line and still get a good spray,but most containers have a couple sprayers and different flow rates...  

Check out all this stuff from my local produce supply catalog on pg.43 + 44 http://noltsproducesupplies.net/2015catalog.pdf

You can also get a filter and pressure regulator but you don't really need them.

Hi,
If you get big plates to group the pots in . Let's say 5 pots per plate ( there some long ones and with a high edge ). That would make 6 plates to water.
Of course, if your pots are huge or sips, that doesn't work .
Whatever you do, you would need to run it for a week to check for potential problems, and to know what quantity of water to distribute.
For the plates, the check up is easy : if there is still water, don't add more .
Let us know what you'll do .
My trees are in ground ... I can't group them ...

See my post here if you want to do it right:  http://figs4funforum.websitetoolbox.com/post/drip-irrigation-for-figs-in-pots-7512931?pid=1288015482#post1288015482

Thanks for all the input everyone. One question on the drip systems, all my trees are in 20 gallon pots. will the "drop" really be enough to distribute moisture to the entire pot? Seems like it would only dampen a small area in a large pot.

Got this all setup today. Having a lot of trouble getting the pressure on the emitters dialed in. I went with the half circle version and put two in each 15 gal pot. They seem to want to spray too hard and all the way out of the pot, or I turn them down and they're facing the wall of the pot instead of good spread into the center. Have any others dealt with this?