Just moved to a new house that has 2 very large rosemary bushes on the side of my steps leading up the the house. One of the bushes looks great, but the other one is shrivelled (though it has A LOT of purple blooms). It's not really dried up or discolored, just has underturned branches and shrivelled in appearance. There are A LOT of bees in this particular rosemary bush, whereas, the other one doesn't have nearly as many bees. I'm a gardening newbie. . . trying to find out all I can about how to care for these bushes. Can you help?