Veronicastrum virginicum, or Culver's root, is a species of flowering plant in the plantain family, Plantaginaceae. It is native to the eastern United States and south-eastern Canada.

Veronicastrum virginicum 'Apollo' is a tall, late-summer flowering perennial with elegant white flower spikes, perfect for adding vertical interest to UK

https://en.wikipedia.org/wiki/Veronicastrum_virginicum

Veronicastrum is a genus of flowering plants in the family Plantaginaceae. In some taxonomy systems, Veronicastrum species have been placed within the genus Veronica.

Veronicastrum virginicum 'Apollo'

Veronicastrum virginicum 'Diane' is a tall perennial with elegant white flower spikes, perfect for late summer borders and wildlife gardens.

Veronicastrum virginicum 'Diane'

Veronicastrum virginicum 'Erica' is a tall, summer-flowering perennial with slender spikes of pale lilac flowers, ideal for adding vertical interest to borders.

Veronicastrum virginicum 'Erica'

Veronicastrum virginicum 'Klein Erica' is a clump-forming herbaceous perennial belonging to the genus Veronicastrum, known for its upright stems and whorled narrow foliage. This deciduous plant thrives in full sun or partial shade, favouring fertile, moist but well-drained soils such as clay or loam with a range of pH levels. Hardy to UK zone H7, it is suitable for exposed sites and can be used effectively in flower borders, cottage gardens, prairie plantings, and wildlife gardens. It flowers from spring into summer, producing elongated racemes of small blossoms typical of the genus.

Veronicastrum virginicum 'Klein Erica' is a hardy herbaceous perennial with upright stems, ideal for flower borders and wildlife gardens in spring and summer.

Veronicastrum virginicum 'Klein Erica'

Veronicastrum virginicum 'Pink Glow' features tall spikes of pink flowers in summer, ideal for adding vertical interest to UK borders and gardens.

Veronicastrum virginicum 'Pink Glow'

Veronicastrum virginicum 'Roseum' features tall, elegant spikes of pale pink flowers in summer, ideal for adding height and colour to borders.

Veronicastrum virginicum 'Roseum'

Wulfenia x schwarzii is a spreading branched cultivar of the Wulfenia genus, which belongs to the Plantaginaceae family. This evergreen plant thrives in full sun on a south-facing, sheltered aspect, preferring fertile, well-drained loam soil with a neutral pH. Hardy to UK zone H4, it is suitable for a variety of garden settings including architectural, wildlife, city and courtyard, cottage, and informal gardens, as well as flower borders and beds. Its season of interest spans spring and summer, and it can be propagated by division in early spring or basal cuttings in spring or early summer.

Wulfenia x schwarzii thrives in full sun, is hardy to RHS H4, and adds architectural interest to spring and summer gardens.