Re: Pruning an overgrown hedge/shrubs
So far it sounds like you've been working in the right direction. Depending on what the green leafy thing is that comprises the hedge, the time for it to rebound will vary. Oleanders, for instance, will fill in quite well within 6 months to a year. Slower growing greenery will take longer.
The thing to remember with most "hedge" like bushes is that they need light, all the way to their center, so if you don't thin the exterior regularly, all you'll have is a bushy facade and nothing behind it when you prune. If you thin it regularly, you will promote growth within the interior of the bush and it will flourish with every pruning.
Another tip is to prune half of the bush at a time, which is to say, prune the front half in the spring and the back half in the fall. By pruning in this manner, you will not deplete the screen that the bush provides, yet still promote healthy growth to the core of the plant.
Height isn't a concern, you can prune this as frequently as you like, it is the sides that provide the visual barrier, so this is what you carefully prune in spring and fall.
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