Howdy We live in Hot ole Texas. We treated and prepared over 4000 ft of ground for plants. Pampas grass and evergreens. We laid down mulch 3ins deep 5 ft wide on each side of driveway which is 2000 ft in length from main gate to main house on both sides. We planted pampus grass with evergreen shrubs inbetween every 4 ft ...the grass is growing like wild fire...once it takes root its gone...but we have a few that are big 5ft over and some smaller that are tilting or leaning. The roots are not showing...they been treated for ants and grasshoppers. But some are falling over or thou they seem to be...Anyone got any ideas why