Phyllodoce Caerulea, also known as the blue hairweed, is a flowering plant species that belongs to the heath family. This plant species is native to the rocky seashores of Europe and North America. The blue hairweed is also known by various synonyms, including Phyllodoce coerulescens, Phyllodoce glanduliflora, and Phyllodoce empetriformis. Other synonyms for this plant include blue mountain heather and blue heath. Its blue-purple flowers bloom from June to August and are pollinated by bees, butterflies, and hummingbirds. This plant is typically found in coastal areas and can be used in landscaping due to its hardy nature and attractive blooms.