Some customers are asking me to replace some dead shrubs that were installed more than a yr. ago by another co. One has an Alberta spruce. Just one that had spider mites. I told her it would be $180.00 to replace (cost 120) with no warranty. I figured his covered delivery, disposing of the old and planting. Not long at all. She asked why I dont guarantee it and I proceeded to tell her that new landscapes are covered by companies to cover costs, installation, and because landscapers dont know if any problems will occur. Since I now know that the only problem in 3 yrs was spider mites I can simply say to water more. Do you installers guarantee individual plantings. If so how long, and do you figure the labor per plant or do you have other methods. It just seemed impossible charging 2-3x the plant cost for this.