I suggest you first identify the shrubs. Then check a pruning
> book. You don't have to buy the book if you have a decent public
> library nearby. Otherwise, a good nursery might let you browse
> throught a copy.
I'll try to find out what they are, the neighbors don't know. Last fall I cut several feet off the top and they have already grown taller than they were when I cut them. Whatever they are, they are voracious growers. I broke a twig off and stuck it in a pot, it grew a root within a week.
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