Q.Why Won’t My Blueberry Bushes Grow?
We bought 5 different varieties over 4 years ago…. they are only 1-1 1/2 ft tall. Any idea what it could be? Noticed spotting on the leaves.

Certified GKH Gardening Expert
You need to read this article first:
https://www.gardeningknowhow.com/edible/fruits/blueberries/blueberry-leaf-spot-treatment.htm
and then, perhaps, this one: https://www.gardeningknowhow.com/edible/fruits/blueberries/blueberry-fertilizer.htm
I also decided to include a link to a series of blueberry articles, since you have several different varieties.
https://www.gardeningknowhow.com/edible/fruits/blueberries