low-cost easy raised garden beds? [View all]

I need to build a raised garden bed for some lowbush blueberry plants.

They were planted this spring in a 4x4 ft cedar raised bed (a kit I got at Home Depot) with some wild native strawberries.

However, the strawberry plants have been growing quite enthusiastically and are taking over the 4x4 ft bed. The blueberry bushes are looking pretty sad, and I really should transfer them soon if i want to save them.

I'd like to build something that's 2-3 ft wide and 6-8 ft long, and at least 1 ft high. The plan is to protect the plants from deer using PVC hoop covers. Or something ...

I don't have a lot of time to construct it. The logistics for a wood raised bed are too difficult right now. So I was thinking of using 16x8x8 in. cinder blocks, stacked twice, to give 16 inches of height. My concern is stability; is there some way to secure the blocks with a cement-type glue, or is staggered stacking enough?

Are there other low-cost suggestions? I need something that's fast, easy and cheap, and it doesn't have to be permanent.

Someday, when I have more time to make mistakes and re-do it until I get it right, I'll make some nice cedar raised beds.