Poole,
Why do you need to move these plants, are you moving ? plants that mature I would Not want to transplant if I could avoid it! and if I had no choice , it would only be when they are fully dormant... I don't know what zone you are from but the buds on mine are already swelling. Best of luck to you and hope they survive.
Ken

Try digging up one on the last week of winter or the earliest point possible afterwood. You need a very strong shovel- the best is a long handled, solid steel "King of Spades" from AM Leonard or elsewhere (it's actually a spade). Get the one with the longest blade. If this is too expensive for your budget, at least get something with a reinforced fiberglass handle and a guarantee.

If the root-system is concentrated in the top 6 to 9" of soil in a fibrous mat you will be able to easily dig the plant up while saving most of the root system. If the plant doesn't easily pop out of the soil they probably are not worth moving. Blueberries are notoriously slow growing and suffer if you loose too much root.

After moving, remove flowers for at least the first year and in subsequent years until plants return to normal vigor. Be sure the new sight has light, rich, highly organic soil and is adequately acidic and well drained. You can use a 50-50 by volume peat to soil mixture (top 9 to 12 inches) to help acquire acidity and organic matter, but peats influence declines as it breaks down so subsequent applications of sulfer may be needed.

Keep plants mulched (pine sawdust is good, as are needles but any woodchips will do) and do not let the soil dry out until plants are well established- especially early the first season.

I need move that wild blueberries because we want pasture fences for ponies!?

Here zone 5

Thanks
Mary

Thank you Harvestmand and Mudflapper..

I will contact my local blueberry farm.

I doubt your local blueberry farmers have much experience transplanting older blueberries- or any. You might be better served asking someone who gardens for a living. I guess it doesn't hurt to ask them, but I'd think they probably wouldn't have time for such projects anyway.

Or maybe a good landscaper? I've had my landscaper move a few of my non-fruit plants. -Glenn

The way I would transplant these is, mark a circle at least one foot from the trunk of the bush all the way around, then place a shovel on the line and insert as straight up and down as possible ( there is a specific type of shovel to use but I don't know the name of it, but I bet Harvestman Knows ) do this all the way around the plant. Outside the circle you just made; remove the dirt. I would go one foot down, you should now have a root ball 2FT in diameter and 1FT thick then place the shovel down flat and sever the root ball, have a friend help lift the ball out of the ground and place in a cart or something, then dig a hole where you want the plant to be and place in the hole...This is just the way I would do it, so if anyone want to chime in.
Ken

I forgot to add in the last post that if you have a piece of plywood or something that would fit under the bush before you lift it out of the hole would help, just tip the root ball enough to get the board under the plant.