I am having a problem with keep the grass around my trees green. Half a dozen trees died in the area last year, so I am trying to make sure that doesn't happen to more. I suspect I am not getting enough water to the area despite having almost maxed out my water rationing.
I remembered awhile back seeing a rod that you would stick in the ground that water a few feet below the ground level in order to keep the roots growing deep and not pulling water that the grass needs. Here is an example on Amazon. I wasn't able to find one at my local hardware store and the selection is very small online. This has got me wondering if they really don't work that well.
So, are these actually helpful to use? If not, is there any approach I should be taking to try to get enough water to this area?
My current water rationing allows me to water 2 days a week for a total of 10 hours during each of those days. Split this across 10 zones and I am maxed out at an hour per zone, 2 days a week. Currently I am watering this area for 45 minutes, 2 days a week.