Herbaceous Perennials

Agapanthus 'Midnight Cascade' stands out with its strikingly dark plum-purple flowers, setting it apart from other African Lilies. This captivating perennial serves as more than just a beautiful addition to the garden; its dense foliage also functions as effective ground cover, particularly in sunny borders.

Height: 70cm (27")

Spread: 45cm

Agastache ‘Red Fortune’ is a bold and vibrant perennial, producing striking spikes of deep rose-pink to reddish-magenta flowers from midsummer through to early autumn. Its aromatic, dark green foliage releases a minty-anise scent when brushed, making it a sensory delight as well as a visual one. This upright grower is a magnet for bees, butterflies, and other pollinators, and adds a punch of colour and height to mixed plantings.

• Height: 80–90cm
• Spread: 40–50cm

Aquilegia ‘Black Barlow’ is a striking, double-flowered variety of columbine with rich, velvety blooms in deep purple-black – almost black – held on slender, upright stems above soft, ferny foliage. The intricate, spurless flowers appear from late spring into early summer, bringing a dramatic, elegant note to borders, containers, and shady corners. Part of the Barlow series bred for their distinctive pompom-style flowers and excellent garden performance.

• Height: 60–75cm
• Spread: 30–40cm

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Brunnera macrophylla is a much-loved shade-loving perennial, grown for its heart-shaped, rough-textured foliage and sprays of delicate, sky-blue flowers that resemble forget-me-nots. Flowering in mid to late spring, it brings light and freshness to woodland gardens, shady borders, and containers. After flowering, its lush foliage remains attractive throughout the growing season, providing texture and contrast among other perennials.

• Height: 30–45cm
• Spread: 45–60cm

A statuesque beauty for the back of the border, Cephalaria gigantea is an architectural perennial that brings height, lightness, and movement to the garden. Towering stems reach up to 2.5m tall, topped with soft lemon-yellow, pincushion-like flowers that dance in the breeze from early to mid-summer. The airy, see-through habit allows it to rise above other plants without casting heavy shade, making it an ideal choice for layered planting schemes. Loved by bees and other pollinators, it creates a delightful, wildlife-friendly focal point.

• Height: 200–250cm
• Spread: 75–90cm

Description: Delicate, bright pink flowers with a yellow center bring a joyful and lively touch to sunny gardens.

Height & Spread: 30 cm | 45 cm

Description: Soft yellow bell-shaped flowers on slender stems provide a refined, subtle beauty.

Height & Spread: 60 cm | 30 cm

Digitalis purpurea ‘Dalmatian Peach’ is a refined twist on the classic foxglove, offering elegant spires of soft peach-apricot flowers with delicate, freckled throats. Blooming in early summer, this compact, fast-growing variety forms neat rosettes of foliage and produces flower spikes that are shorter and more uniform than traditional types – making it ideal for smaller gardens, borders, and containers. Its soft colouring pairs beautifully with pastels and silvers, adding a gentle, romantic note to planting schemes.

• Height: 60–90cm
• Spread: 30–40cm

Description: Large, rose-pink blooms with a rich, velvety appearance give this foxglove a unique and eye-catching look.

Height & Spread: 80 cm | 45 cm

Erigeron 'Sea Breeze' is a delightful, low-growing perennial that produces a profusion of daisy-like flowers with soft lavender-pink petals and golden yellow centers. Blooming from late spring to autumn, this charming plant forms a dense, mounding habit with fine, bright green foliage. Its long flowering season and compact size make it perfect for edging borders, softening pathways, or adding a splash of color to rock gardens and containers.

• Height: 20–30 cm
• Spread: 30–40 cm

Description: Compact, with daisy-like lavender flowers that bloom continuously, adding soft charm to containers and borders.

Height & Spread: 25 cm | 30 cm

A much-loved classic and one of the longest-flowering perennials you can grow, Erysimum 'Bowles’s Mauve' is an evergreen wallflower that delivers months of soft mauve-purple blooms. Held in upright spires above neat, grey-green foliage, the flowers begin in early spring and often continue right through to late autumn. Compact, drought-tolerant, and pollinator-friendly, it's a garden staple that brings reliable colour and structure to beds, borders, and containers alike.

• Height: 45–60cm
• Spread: 40–50cm