Quote:
Originally Posted by OtayBW
Correct. To the OP (OP), it all depends on your local soil conditions. High Available Water Holding Capacity (e.g., high clay soil) does not necessarily equate to high Moisture Supplying Capacity (clay does not release moisture easily). Shallow to shale as one poster indicated would also not benefit from deep watering. See if you can get someone to check out your local soil type/conditions and make a recommendation....or bore/dig a small hole and see what you're working with. You may well be better off with a shallow drip system. It just depends....
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CSU Extension should be helpful here. Public outreach is part of the point of a land grant institution. Or just go find the knowledgeable person at a local nursery or landscape place.