Veronicastrum latifolium

Veronicastrum latifolium is an unusual representative of this genus of perennial plants, better known as Veronicastrum virginicum. It is a creeping plant, with long stems that are initially erect and then trailing, capable of rooting when in contact with the soil like periwinkle. Its small lavender-blue spike-like flowers bloom in late summer, with foliage that takes on beautiful bronze to red-purple tones until autumn. Semi-evergreen in winter, hardy and undemanding, this plant is an effective, original and elegant ground cover at the base of shrubs. Its naturally trailing habit will also work well when placed above a wall to cascade down.

Véronicastrum latifolium is native to China, specifically from the Sichuan province, and resistant to cold winters (-20°C). In nature, it is found in forests and groves or sometimes hanging on rocks, at altitudes from 300 to 500 m (984 to 1640ft). This perennial, sometimes called creeping veronica, develops green stems covered with short yellow hairs, which trail before reaching 50 cm (20in) and root on contact with the ground. Its rapid growth allows it to densely cover the ground in about 2 years, discouraging weeds. The foliage can persist in winter, disappearing completely in severe winters. The 4 to 7cm (2 to 3in) long and 2 to 5cm (1 to 2in) wide, triangular, slightly hairy leaves are strongly toothed along the edges. The unassuming flowers appear quite late, from late August to early October with small clusters or pompoms of 1 to 4 cm (0 to 2in), composed of tiny flowers with pale lavender-blue petals and prominent stamens in the leaf axils. After flowering, the foliage takes on beautiful yellow to pink and purple-violet colours if the plant receives some sunlight. In winter, the light green leaves that have remained attached to the stems, have a beautiful purple reverse.

Veronicastrum latifolium is a good ground cover, useful for landscaping the base of deciduous trees and shrubs, as long as the soil is not too dry. It is a good plant for partial shade or light shade, and will appreciate evening or morning sun and soil rich in humus. For example, place it in an exotic inspired group of plants, under Fatsias, Aralias, or at the base of bamboo. It will also thrive in a slightly cool and shaded rockery, or above a wall, with the yellow strawberry Waldsteinia ternata, which are also hardy.