recommendations on tree drips

xillMarch 26, 2013

hey all. i've finally got my drip systems installed for at least 2 zones to get me through the summer without spending an hour every night hand watering. but I have 3 trees that i'd like to include on my zones as well so I can do away with using the water hoses altogether. I have a young indian laurel (about 15ft x 15ft) that is well established already, a fan-tex ash that is going on it's 3rd summer since planted from a 15g (it's roughly 10ft tall), and towards the back of the yard I have a chilean mesquite that I'm hoping will give my veggie gardens nice filtered shade in the coming years. The mesquite is just a stick right now, it was just planted 2 months ago. I run the drip on this zone for 60 minutes once a week and will be bumping it up to 90 minutes twice a week after we get over 100F. What size drippers and how many would you guys recommend for these trees if i add them to this existing zone? I'd like to drip the mesquite only enough to get it established the first year, and the ash is planted 3 ft from the edge of our back lawn so it gets some shallow water there too. The ficus has lots of shrubs all around it that are on the same drip zone as well so it's already getting a little water at the feeder roots too (and starting to produce nice lime green leaves already).

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I would make sure your trees have a well around them so when you water, it won't run off. Try using adjustable emitters. that way you can turn them off when you need to. I buy my products from Ewing Irrigation, There is also Sprinkler World and Horizon Irrigation. They have better products than the box stores.

    Bookmark   March 26, 2013 at 8:15PM
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they have a basin now, that's how i water the mesquite. the ficus and the ash i just lay the hose on their drip lines and let the water trickle overnight once a week for each. being that they'll be on drip emitters now it's unlikely they'll need the basin anymore though. i was kinda hoping someone knew how many gallons each tree should receive and if they could receive it during the span of 60-90 minutes. if they need more water or need it to drip for longer than that then i'll have to setup a separate circuit just for them.

    Bookmark   March 26, 2013 at 11:21PM
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you should still keep a well around the trees. You need the water to soak down deep to get the roots to go down into the ground.

    Bookmark   March 27, 2013 at 10:11AM
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We soak our trees with enough water to fill the well around them. You may need to determine your water flow and time required to fill your tree wells.

    Bookmark   March 27, 2013 at 10:37PM
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Hi xill,

Here are approximate water amounts needed by your ficus, ash and mesquite based on information from the University of Arizona.

15 ft. diameter ficus - 300 gallons once every 10 days
10 ft. diameter ash - 120 gallons once every 10 days
new mesquite (guessing 3 ft. diameter) - about 5 gallons once a week

You'll just need to figure out how many and what size emitters are needed to apply this amount of water.

    Bookmark   March 28, 2013 at 12:14PM
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this is exactly what i was looking for. thank you. i couldn't find squat through google, but this is the reference i needed :)

    Bookmark   March 29, 2013 at 12:22PM
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