Plant List W
| Wahlenbergia | rivularis | A spreading perennial with dark green leaves and wiry stems carrying solitary white open bellflowers. Height 30cm. Moist soil in sun or part shade. Jul.-Aug. | |
| Waldsteinia | ternata | A spreading perennial with saucer-shaped bright yellow flowers in late spring and early summer. Height 10cm. Well-drained soil in sun or part shade. | |
| Weigela | "Carnival" | A compact upright shrub with many tubular flowers of pink and white. Height and spread 1.5m. Well-drained soil in sun or part shade. Flowers from May to June. Prune out flowered wood. | |
| Weigela | "Florida Variegata" | A spreading shrub with grey-green leaves, margined white. Funnel-shaped, light pink flowers. Height 2m. Spread 2m. Well-drained soil in sun or part shade. May to June. Deciduous. | |
| Weigela | "Gold Rush" | A spreading deciduous shrub with green leaves, margined creamy-white. Funnel-shaped, pink flowers. Height 2m. Spread 2m. Well-drained soil in sun or part shade. Flowers from May to June. Prune out flowered wood. | |
| Weigela | "Kosteriana Variegata" | A large deciduous shrub with lime-green and cream variegated leaves and showy deep rose-pink flowers. Height and spread 3.5m. Well-drained soil in sun or part shade. May-Jun. | |
| Weigela | "Lucifer" | An upright shrub with dark green leaves and many tubular flowers of dark red. Height and spread 2m. Well-drained soil in sun or part shade. Flowers from May to June. Prune out flowered wood. | |
| Weigela | "Moulin Rouge" | A spreading deciduous shrub with yellow and green variegated leaves, producing bell-shaped, rich red flowers. Height 1.8m. Spread 1.8m. Moist well-drained soil in part shade. Flowers from May to June. Prune flowering shoots (after flowering !). | |
| Weigela | "Olympiade" (Rubidor) | A spreading deciduous shrub with yellow-green leaves in spring, turning bright yellow in summer, producing bell-shaped, dark ruby-red flowers. Height 2m. Spread 2m. Moist well-drained soil in part shade. Flowers from May to June. | |
| Weigela | "Pink Poppet" | A new dwarf variety with soft pink tubular flowers. Height and spread 40cm. Well-drained soil in sun or part shade. May to June. Prune flowering shoots (after flowering !) and a second flowering may occur in Autumn. | |
| Weigela | florida | "Alexandra" | Probably the variety with the darkest of all foliage, offering an excellent foil to the deep red flowers. Height and spread 1.5m. Well-drained soil in sun or shade. Flowers from May to June. |
| Weigela | florida | "Monet" | A new dwarf variety with cream and green variegated leaves that will "pink" in sun. Good pink tubular flowers produced on new wood. Height and spread 60cm. Well-drained soil in sun or part shade. May to June. Prune flowering shoots (after flowering !) |
| Weigela | japonica | "Dart's Colourdream" | A spreading shrub with bright green leaves. Bell-shaped flowers change colour as they age but appear red, pink and white from late spring to early summer. Height and spread 2.5m. Well-drained soil in sun or part shade. |
| Weigela | middendorffiana | An upright shrub with bright green leaves and bell-shaped, pale yellow flowers, marked orange or red in the throat. Height 1.5m. Spread 1.5m. Flowers from April to May. Well-drained soil in part shade. | |
| Weldenia | candida | Strap like leaves with white three-petaled flowers. Height 15cm. Gritty soil in sun. Probably best grown in pots. Keep dry in winter. May-Sep. | |
| Wisteria | "Caroline" | A twining, deciduous climber with pendent racemes of deep purple-blue pea-like flowers, often before the pinnate leaves. Height 9m. Moist well-drained soil in sun. May to June. Can bloom again in late summer. | |
| Wisteria | "Lavender Lace" | A twining, deciduous climber with pendent racemes of bicoloured blue and white flowers, often before the pinnate leaves. Height 9m. Moist well-drained soil in sun. May to June. Can bloom again in late summer. | |
| Wisteria | floribunda | "Domino" | A twining, deciduous climber with pendent racemes of lilac-blue flowers, becoming light blue, often appearing before the pinnate leaves. Height 9m. Moist well-drained soil in sun. May to June. Can bloom again in late summer. |
| Wisteria | floribunda | "Harlequin" | A twining, deciduous climber with pendent racemes of dark purple flowers with standards of pale mauve with a small yellow blotch, often before the pinnate leaves. Height 9m. Moist well-drained soil in sun. May to June. Can bloom again in late summer. |
| Wisteria | floribunda | "Multijuga" | A twining climber with pendent clusters of fragrant, lilac-blue pea-like flowers that can reach up to 1m. long. Height 9m. Moist well-drained soil in sun or part shade. Flowers from June to July. |
| Wisteria | floribunda | "Rosea" | A twining, deciduous climber with long, pendent racemes of pale rose flowers tipped purple, often before the pinnate leaves. Height 9m. Moist well-drained soil in sun. May to June. Can bloom again in late summer. |
| Wisteria | sinensis | "Black Dragon" | A twining climber with many pendent clusters of fragrant, double dark purple pea-like flowers. Height 9m. Moist well-drained soil in sun or part shade. Flowers from May to June. |
| Woodsia | obtusa | A North American dwarf deciduous fern with elongated fronds, slightly hairy. Height 30cm. Moist soil in shade. | |
| Woodwardia | fimbriata | "Giant Chain Fern". A deciduous fern with arching lance-shaped fronds. Named because of the arrangement of the sori. Height up to 3m. Requires some winter protection. Moist soil in shade. |