Galleries Gardening Flowers Bluemink with hoverfly Bluemink with hoverfly Blue ageratum (Ageratum houstonianum) with hoverfly License License this image from Alamy Keywords ageratum houstonianum anual anual plant bedding plant blue blue ageratum bluemink close-up closeup corymb corymbs flossflower Flower Flower Head flowers garden hoverfly insect macro nectar ornamental ornamental plant Plant syrphidae