Caucasian Speedwell

Veronica caucasica is an elegant, fine-textured ground cover that is underutilised in British horticulture. It forms a low mat of very narrow, feathery green leaves that create a soft, moss-like appearance. In late spring and early summer, the foliage is almost entirely hidden by a profusion of delicate, pale blue to white flowers, each intricately veined with darker blue. This species is particularly effective when allowed to spill over the edges of raised beds, stone walls, or gaps in paving. It is very hardy and prefers a well-drained soil in full sun, making it an ideal companion for Mediterranean-style plantings or alpine gardens. Unlike some other speedwells, it maintains a tidy habit and does not become leggy. After flowering, the spent stems can be lightly sheared to maintain a tight, carpet-like form. Its drought tolerance once established makes it a sustainable choice for sun-baked spots where other ground covers might wither in the summer heat.

Sun: Full sun.

Soil: Gritty, well-drained soil.

Hardiness: H5 — down to −15°C.

Flowering: May, Jun.