Phlox douglasii, common name tufted phlox or Columbia phlox, is a species of perennial herb belonging to the family Polemoniaceae. In the past it has been mistakenly included within the species Phlox caespitosa.[1]
Phlox douglasii can reach a height of about 10 cm. This plant forms low shrubs, mounds or cushions of simple needle-like dark green leaves, 4–8 millimetres (0.16–0.31 in) long, with sharp tips and forming short tufts. Growth is from short basal woody stems but during the growth season these are largely hidden by leaves. Both the leaves and the floral calyx bear short gland-tipped hairs. Flowers may be purple, pink, pale lavender or magenta-red, about 1.5 cm across, usually in terminal clusters. They bloom from April to August.
Phlox douglasii is native to northwestern United States.
This species prefers dry areas, sagebrush scrubs and woodlands, at elevation of 300–2,000 metres (980–6,560 ft) above sea level. It can be found in Columbia plateau scabland in rocky soil over shallow basalt bedrock.
The following hybrid cultivars have received the Royal Horticultural Society's Award of Garden Merit:
Leaves with sharp tips and glandular hairs
Calyx with short glandular hairs
Phlox douglasii, common name tufted phlox or Columbia phlox, is a species of perennial herb belonging to the family Polemoniaceae. In the past it has been mistakenly included within the species Phlox caespitosa.
