I recently added to my companion plants for my orchard by tucking some German Winter Thyme (Thymus vulgaris) into a corner beside my two blueberry bushes. Thyme makes a good companion to blueberries because they both like acidic soil and the thyme will attract bees and help to get those berry bushes pollinated. I also use a lot of thyme in my kitchen, so a good sized bush of this common culinary species will be a useful addition for my cookery, too.
I also plan to plant Creeping Thyme (Thymus praecox) directly around the blueberry bushes to create an alternative ground cover over the sheet mulching that I will have done to replace the grass. Not only will it look beautiful when it flowers, it won’t dry up during our increasingly hot, rainless summers like the grass does, and it will smell wonderful when we walk over it to care for and harvest our blueberries!