Did you by chance prune your grape vines or maple trees within the last month or so and notice the resultant bleeding? Fortunately, although this seems to be a tremendous worry to us, it really doesnt harm the plants at all. Just let them bleed, it will stop in time. There is absolutely nothing you can do to stop it, as you will quickly discover if you ever try. Next year prune them in December or January so they have a chance to heal over.
Do you have any hedges that worry you because they are not compact and as much of a screen as you wish? Now is the time to do something about it. Unfortunately hedges that are open from the bottom from lack of sufficient branches will seldom get more compact by pruning only at the top. The only satisfactory way to handle deciduous shrubs is to cut them within an inch or two of the ground. This should be done immediately.
To help along the new growth, apply any complete commercial fertilizer in a strip two feet wide on both sides of the hedge using four pounds for each 25 feet of hedge. As the new growth starts, prune it lightly after every four to six inches of growth to get as much branching as possible near the ground.