Blue phlox Phlox divaricata 'Clouds of Perfume' Photo/Illustration: Steve Aitken 1 2 3 4 5 6 7 8 9 10 11 Blue phlox (Phlox divaricata 'Clouds of Perfume') floks div-air-ih-KAY-tah Genus: Phlox This is a very fragrant native woodland phlox with powder-blue flowers in spring. Reaching only 1 foot tall, it can spread to almost 2 feet and makes an attractive groundcover under shrubs or planted with other spring-blooming wildflowers. Leaves are semi-evergreen and hairy; stems root along their length. The blue flowers are salverform with petal lobes. This plant attracts hummingbirds and butterflies. Noteworthy Characteristics: Very fragrant. Spreads by stem roots. Care: Grow in humus-rich, fertile, moist but well-drained soil in partial shade. Propagation: Sow seed in a cold frame when ripe or in spring. Take basal cuttings in spring or root cuttings in early fall or winter. Detach rooted stem pieces in spring or early autumn. Problems: Powdery mildew, stem canker, rust, Southern blight, stem nematodes, leaf spots, leaf miners, and caterpillars. Rabbits can also cause damage. Overview Height 6 in. to 12 in. Spread 1 ft. to 3 ft. Growth Habit Spreads Growth Pace Moderate Grower Light Part Shade Only Moisture Medium Moisture Maintenance Moderate Characteristics Attracts Butterflies, Attracts Hummingbirds, Fragrant Flowers, Native, Showy Flowers Bloom Time Early Spring, Late Spring, Spring Flower Color Blue Foliage Color Evergreen Uses Beds and Borders, Ground Covers Style Woodland Garden Seasonal Interest Spring Interest Type Perennials Related Plants to Phlox divaricata 'Clouds of Perfume' 1 2 3 4 5 6 7 8 9 10 11 Lily of the Valley, May bells Convallaria majalis 1 2 3 4 5 6 7 8 9 10 11 Blue phlox Phlox divaricata and cvs. 1 2 3 4 5 6 7 8 9 10 11 Western bleeding heart Dicentra formosa 1 2 3 4 5 6 7 8 9 10 11 'Silver Shimmers' lungwort Pulmonaria 'Silver Shimmers' View the discussion thread.