We have 150 Leland's to install at a home (2+ acres) I have never planted leland cypress for a screen ...we usually go for Hollies or wax myrtles but in this case they wanted lelands. 1st Q. Do I need to tree rope & tie these down since we are suseptable to ice storms? 2nd Q. What kind of warranty do you allow for non irrigated properties? I usually offer non irrigated properties 90 days labor & material /1 year labor only I factored into the price that we could possible loose 20 in the first 90 days hopefully at worst.