We have uprooted and moved mature buxus hedges and replanted in-ground within a few hours. We purchased new soil to replant. It’s been 3 weeks, and I have noticed some of the colour of the whole hedge has gone a slightly discolouring from the original emerald green from the date of the replanting. I’ve been watering every day or 2. Is my hedges dying because it has been up-rooted? Am I watering too much. Or is the colouring changing notmal? How can I get it back to the green emerald colour?
Moving a mature plant is always difficult and dangerous so this will be the #1. reason for it ailing. Minimising root disturbance is more important than fresh soil. The problem is transplant shock and you'll need to be patient to allow it to recover. You can help by not watering it so much - just once a week will be sufficient and add some Seasol or other seaweed or kelp plant tonic to the watering can - this is the best way to compensate for transplant shock.