tree planting

I would like to replicate this southern driveway of Live Oak with Spanish Moss in South Middle Tennessee. I have read that they need to be spaced 100' apart but as you can see from the photo, these are maybe 10' apart. Would I be able to healthily space them 30' apart? What would happen? Any...

A customer purchased a couple dozen 'Smaragd' / Emerald Green Thujas and called me about installation. I install customer provided trees, but without a warranty. It hasn't been an issue. However, when I visited the site today he would like them planted along a fence that borders his mature oak...

What do you recommend for pricing and markup for new tree plantings? I've been doing wholesale + 10% on the tree itself and then a set fee per tree for installation depending on the pot size. Some of my customers have asked for a warranty, so wholesale + 10% won't cover the failures over time...