| Perennial | Details |
| Achillea millefolium ‘Cerise Queen’ | Dark green feathery leaves with cherry-pink flowers. Any soil in sun or part shade |
| Aconitum cammarum 'Stainless Steel' | An erect perennial with dark green leaves, branched panicles of steel blue flowers. |
| Aconitum carmichaelii 'Pink Sensation' | An upright perennial with dark green leaves. Dense spikes of pale pink flowers. |
| Aconitum lamarckii | A broadly upright perennial with light green leaves and open spikes of pale yellow flowers. |
| Aconitum napellus 'Rubellum' | An upright perennial with dark green leaves. Dense spikes of indigo-blue flowers. |
| Aconitum septentrionale 'Ivorine' | An upright, bushy perennial with dense racemes of ivory-white flowers. |
| Actaea simplex 'Brunette' | Clump-forming perennial with dark bronze, long-stalked leaves. Pure white flowers on slender branched stems. |
| Actaea simplex 'Hillside Black Beauty' | Clump-forming perennial with dark bronze-purple, long-stalked leaves. Pure white flowers on slender branched stems. |
| Actaea simplex 'Pink Spike' | Clump-forming perennial with dark bronze-purple foliage. Pale pink flowers on slender branched stems like bottlebrushes. |
| Ajuga reptans ‘Burgundy Glow’ | Creeping semi-evergreen alpine with red, bronze and cream leaves and spike-like light blue flowers. |
| Ajuga reptans atropurpurea | A well-known native wild flower spreading by runners which bear rosettes of smooth glossy foliage, and in early summer a profusion of leafy spikes of whorled blue flowers. An excellent ground cover plant for front of the border or wild garden |
| Ajuga reptans 'Black Scallop' | A lovely ground cover plant with foliage which is heavily marked with pink and cream |
| Ajuga reptans 'Rosea' | Creeping semi-evergreen with shiny green leaves and spikes of light pink flowers. |
| Alchemilla erithropoda | Felted green lobed leaves topped by frothy balls of green-yellow flowers, turning flame red by autumn |
| Alchemilla mollis | Sprays of tiny yellow-green flowers Jun-Aug. Sun or light shade |
| Anemone hupehensis 'September Charm' | Erect perennial with suckering shoots, dark green leaves. Flowers pale pink. |
| Anemone leveillei | Perennial with green deeply cut leaves. White flowers. |
| Anemone nemorosa 'Alba Plena' | Vigorous, low-growing perennial with mid-green deeply cut leaves. Solitary small double white flowers. |
| Anemone nemorosa 'Robinsoniana' | Vigorous, low-growing perennial with mid-green deeply cut leaves. Solitary pale lavender-blue flowers. |
| Anemone nemorosa 'Royal Blue' | Vigorous, low-growing perennial with mid-green deeply cut leaves. Solitary dark-blue flowers. |
| Anemone palmata | Attractive perennial with green deeply cut leaves. Creamy yellow flowers. |
| Anemone ranunculoides | Spreading perennial with mid-green deeply cut leaves. Solitary deep yellow flowers. |
| Anemone rivularis | Spreading perennial with mid-green deeply cut leaves. Loose umbels of white flowers often blue on the reverse. |
| Anemone sylvestris | Clump-forming perennial with mid-green deeply cut leaves. Solitary, semi-pendent white flowers with golden yellow stamens. |
| Anemone virginica | Attractive perennial with dark green deeply cut leaves. Creamy yellow flowers. |
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