What would you guys charge to fert & spray this area? Seperate the two items as well. Using a 125 gallon pull behind sprayer with 12 ft booms. Fert. app - velkon (however it is spelled) Spring & Fall treatments. Also what would be the most effective rate of fert - a basic 13-13-13 and I use all trimic but I could go cheaper and get the old stsyle 2-4d. Pretty open - a few evergreen trees here and there but 90% is wide open space! All that is required - broadleaf control. The property is up for bid due to the last guy making this area a nursery for the pretty yellow flower.