Digger's speedwell is more accurately a sub-shrub with semi woody stems. It is best treated as a perennial. evergreen foliage of rounded blue-gray leaves clasp the stems in opposite pairs, making for a handsome foliage plant. Terminal spikes of blue veronica-like flowers are produced in April and early May. This low-growing plant has a graceful arching habit. This is handsome and best appreciated at the front of the border.The foliage and stems can be frozen to the ground in severe winters but the plant is root hardy and will grow from the roots. It flowers on shoots produced the previous season so it is best to prune and shape the plant immediately after flowering no later than mid-July so flower buds have time to develop for the next season. Parahebe perfoliata is drought resistant and grows well in the gravel garden or in the rockery.
Colors & Combos
Great Color Contrasts: purple, pink, orange
Great Color Partners: blue, silver, dark green
Culture NotesGrow this eye-catching perennial in full sun to light shade. It is not particular about soil and will tolerate sandy sites or clay if the drainage is adequate. Once established it is drought tolerant, but appreciates an occasional watering during dry weather. Shelter the plant from wind for best performance. The faded flower stalks can be cut to the foliage in early summer. Cut the foliage to the ground in late winter.
© David Mason
Plant Type: perennial
Foliage Type: evergreen
Plant Height: 2 ft. 0 in. (0.61 m.)
Plant Width/Spread: 3 ft. 0 in. (0.91 m.)
Hardiness: USDA Zones 7 to 10
Flower Color: blue
Sun/Light Exposure: full sun or light shade
Water Requirements: drought tolerant when established, but water occasionally for best growth