I have a huge Ceonothus bush in the front yard. It must measure 12 feet wide and 6 feet tall. It is buzzing with the sound of dozens of bees these days. It must be great for pollen, as no other bushes are attracting them like this one is. I noted three types of bumblebees, honeybees, a bee fly (or something) and mason bees on it while taking these photos. Love all those pollinators!