Five tall ones for the back
Aruncus plumosus ‘Glasnevin’ (5 ft/1.5 m) Creamy white plumes of flowers June-July.
Delphinium ‘Magic Fountains’ (6 ft/1.8 m) Huge spikes with large florets in a selection of pinks, blues and white. June-August.
Helianthus annuus ‘Pacino’ (6 ft/1.8 m) Double golden yellow flowers July-September.
Ligularia clivorum ‘Desdemona’ (5 ft/1.5 m) Orange flower spikes, large purplish leaves. July—September.
Sidalcea (6 ft/1.8 m) Deep pink/red mallow-like flowers. June—August.
Five of medium height
Anemone hupehensis ‘Praecox’ (20 in./500 mm) Semi-double, rose-red Japanese Anemone. August-October.
Aster nova-belgii ‘Marie Ballard’ (36 in/900 mm) Light blue, double Michaelmas daisy. September-October.
Helenium ‘Golden Youth’ (30 in./750 mm) Large golden yellow flowers with prominent dark centres. June-August.
Hemerocallis ‘Frans Hals’ (36 in./900 mm) Day lily. Large tubular flowers, deep yellow with orange . June-August.
Lupinus (Russell Group) ‘Dwarf Gallery Mixture’ (16in./400mm) medium spikes in a wide selection of colours and bi-colours. June-July.
Five low growers for the front
Geranium ‘Russell Prichard’ (8-10 in./200-250 mm) Creeping habit. Carmine red flowers for many months. June—September.
Oenothera missouriensis (10 in./250 mm) Large, bold, yellow evening primrose blooms June—September.
Potentilla ‘Gibson’s Scarlet’ (12-14 in./300-350 mm) Bright red flowers. June-August.
Sedum spectabile (14 in./350 mm) Ice plant. Fleshy leaves. Large light pink flower heads. August—October. Good butterfly plant.
Veronica teucrinum ‘Kapitan’ (10—12 in./250-300 mm) Bright blue flowers on short spikes. May—July.
Five evergreens for added interest
Bergenia (10-15 in./250—380 mm) All varieties recommended. Leathery ‘elephant’s ears’ green leaves, often turning purple in winter. Red, pink or white flowers. March-May.
Dianthus (pinks). Grey-green spiky leaves and pink, red or white single, semi-double or double flowers. Very fragrant. Modern varieties are perpetual flowering. Make good edging plants.
Euphorbia robbiae (24—30 in./600-750 mm) Deep green leaves, sulphur-yellow flowers. May—June. Spreads and seeds easily and needs careful placing.
Helleboms corsicus (24-30 in./600-750 mm) Leathery green leaves and apple-green flowers. April—May.
Ms pallida ‘Variegata’ (30 in./750mm) Cream and grey-green variegated sword-like foliage, blue iris flowers. May.