Japanese Umbella Tree

I saw some beautiful rich green glossy Japanese Umbrella Pine trees in the early Summer but on visiting a couple of months later they were looking tired and yellowy and appeared to have lost some needles!

I regretfully decided not to buy a couple because I could not be sure if once taken out of their pots well watered and into healthy soil the rich green glossy pine needles would return and I would have years of enjoyment or disappointment!

They would have looked great in between my Italian Stone Pine Umbrella trees!

Your opinion would be gratefully received.