It would be more likely to work when the plant is dormant over winter. The Amelanchier here are currently flowering and starting to produce new leaves which would not be the ideal time for moving. The roots are likely to be damaged in moving one so if you could do it in the autumn after leaves have been dropped then it would have a lot more time to recover some of the root function before the leaves are active again and need more water to keep the tree alive.
Preserving as much healthy root as possible in the move would make success more likely so if the tree is after being in position for longer and the roots have stretched further then it can be more difficult.
If you have to move it, you have to move it. Not ideal, because if it's established, and already in growth, there's always a difficulty with getting it out successfully, and getting it re established. The usual advice, is to make sure it's well watered beforehand, dig out as much root as you can, and get it into the new site asap. Ideally, have the new site well prepped first too. They can be pruned too, and that might help get it established more easily. If it's only been in the site a month or two, it won't be a problem at all.
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
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Not ideal, because if it's established, and already in growth, there's always a difficulty with getting it out successfully, and getting it re established.
The usual advice, is to make sure it's well watered beforehand, dig out as much root as you can, and get it into the new site asap. Ideally, have the new site well prepped first too. They can be pruned too, and that might help get it established more easily.
If it's only been in the site a month or two, it won't be a problem at all.
I live in west central Scotland - not where that photo is...
Many thanks