After reading MANY landscaping books and doing work with my own shrubs over the years, I've finally decided on my own way to "regrow" shrubs. Everyone knows when you prune a tree//flower, it regrows new headers and over time basically creates a new plant. What you will need to do (a very timely process), is start with the middle of the shrubs, and prune about 25% of the largest and oldest growths all the way down to the crown. The following year, you will want to prune the outside 25%. On the third to fourth years, you'll want to prune the remaining existing limbs all the way down to the crown. Basically what this does is it centralizes all of the growth on your plant, and starts it anew. I don't know where to find pictures or anything online, but I know I check my library weekly for new books on plants and landscape care, just so when I run into a major problem, I no longer must stress. After all, you should be able to enjoy your land right?
Also, if you do this to all your plants, this will keep all of the new growth the same height! Now I don't know if you have tall standing shrubs that down crown at the bottom, if you do, not sure if this same advice would help.
Also, if you do this to all your plants, this will keep all of the new growth the same height! Now I don't know if you have tall standing shrubs that down crown at the bottom, if you do, not sure if this same advice would help.