Posted: 03/07/2015 at 21:35
My local GC gives a five year guarantee https://www.notcutts.co.uk/returns/content/fcp-content
"... If your hardy plant dies after it’s been planted, please do get in touch. As long as your plant has been lovingly and correctly cared for (which we’re sure it has), you’ll be covered by our five year guarantee. Just dig out a proof of purchase and give us a call..."
Note the words "...correctly cared for..."
I just think that if GCs have to replace plants that have died because of neglect (whether because of lack of knowledge or whatever) they will simply put the prices up to cover it.
After all, if you don't maintain your car properly by not having it properly serviced etc, it will invalidate the warranty.