Hello We are trying our second time planting emerald green arborvitaes for privacy. The first time we tried the trees turned brown within a few months. We ended up pulling them last month. They were planted in Sep23. When pulling they come out very easily and some of the holes had sitting water, but this may have been due to rain the day before. All 8 trees died. For this time we planted, and filled the hole with mainly native soil, a bit of fertilizer, and topsoil. We then mulched and gave a good watering. We water maybe once or twice a week. When I water I use the garden hose for 2-4 minutes. The soil soaks in all the water and it does not pool. We've noticed some of the leaves towards the bottom are turning yellow. We aren't sure if it's a watering issue, transplant shock, or something else. Other trees look fine for now. Any advice is welcomed and appreciated. Thank you.