Have any of you tried 'deep watering'? My son does it with deep waterers(made for trees). They now have them available at Home Depot whereas before we had to get them at the irrigation supply store. Since we've (my ex and I) have been in the landscape installation biz for over 30 years we have installed many irrigation systems...of all types. The deep waterers are pretty amazing for seedling plants, especially. Puts water directly down into the bottom of your holes without having to filter it's way down. So, you irrigate normally on top and then deep water maybe once a week. Check it out...you might like to experiment with a plant or two. They come in 1', 24" and 3' lengths.