Don't have any large plantings, but have put in about 150 conifers of various sizes and species. Meyers, Black Hills, Norway, Blue Spruces and Scotch and Ponderosa Pines. I don't have them in rows so I put in a drip system of 3/4", 1/2", and 1/4" diameter tubing over 2.2 ac and the 1/4" tubing...