Use cement blocks to edge a garden, and fill the blocks' holes with soil and plant to finish -- low-growing plants like creeping thyme, moss roses or strawberries work well and will not grow high enough to shade or otherwise interfere with garden plants.
Want a larger harvest of blueberries? Learn how to prune blueberry plants for a larger harvest. Great step by step tutorial, plus love her tips for what to add to the soil. If you want to put in blueberries or already have them, you need to read this tutorial now.: