Trees are valuable assets that can be prized by their owners. DIEHARD™ products can be a powerful tool in your arsenal for saving stressed or declining trees. Used as a soil drench or in a deep root feeder, DIEHARD™ Injectables can be tank mixed with most fertilizers. Their biological action forms real physical bonds with tree roots to expand their soil penetration, solubilize existing minerals and protect against soil pathogens.