Q.Would Blueberry Bushes Grow In A Swampy Area
The swampy area drains into a river. Native Tamarack trees grow in this area. We are 40 miles north of US border.
Certified GKH Gardening Expert
You could try it. This article says the native highbush blueberries are adapted to bogs and coastal areas, but you would need to get a native plant. The cultivars need well drained, acidic soil.
If you get a cultivar, you could build up a berm in your swamp to grow the blueberries. Or plant them in containers and set them on an area that is raised up from the swamp.
https://blueberries.extension.org/soil-drainage-and-irrigation-for-blueberry-crops/