• Artemisia maritim ‘Coca-Cola’
• Artemisia ‘Powis Castle’

Evergreen dwarf shrub of low rounded habit, finely divided silvery leaves and in late summer insignificant dull yellow flower-heads in narrow panicles

• Helianthemum nummularium ‘Wisley Pink’

Vigorous, spreading evergreen shrub to 30cm tall, with silvery-grey oblong leaves. Flowers single, 3cm wide, pale pink with an orange-yellow centre

• Veronica
• Nandina domestica (sacred bamboo)
• Santolina chamaecyparissus

Halimium calycinum. A spreading, compact bushy shrub with dark-green leaves and bowl-shaped sunny yellow flowers summer and autumn.

Lavandula (lavender): Height and spread variable according to cultivar

A compact evergreen shrub with aromatic, narrow grey-green leaves, and tall fragrant spikes of deep purple flowers in mid and late summer.

Ozothamnus ledifolius

A small, bushy evergreen shrub with tiny, narrow, aromatic leaves bright yellow beneath. Clusters of small, honey-scented flower heads open white from reddish buds

Potentilla fruticosa ‘Primrose Beauty’

A small bushy deciduous shrub with silky, grey-green pinnate leaves. Flowers to 3.5cm in width, are primrose-yellow over a long period from late spring to autumn

Salvia atriplicifolia

A small, upright deciduous sub-shrub to 1.2m, with white stems bearing deeply-divided, aromatic grey-green leaves. Small, violet-blue flowers in large plumy panicles appear in late summer and autumn

Thymus serpyllum ‘Pink Chintz’

An evergreen sub-shrub forming a wide mat to 5cm in height, with small, aromatic, dark green leaves and terminal heads of flesh-pink, 2-lipped flowers

Vinca minor

A mat-forming evergreen shrub with trailing, rooting shoots and opposite pairs of glossy, dark green leaves. From mid-spring to late summer it produces violet-blue flowers to 3cm across

Abelia × grandiflora

A medium-sized semi-evergreen shrub to 3m, with arching branches, bearing small, glossy oval leaves and clusters of pale pink, slightly fragrant flowers over a long period from mid-summer

Ozothamnus rosmarinifolius ‘Silver Jubilee’

‘Silver Jubilee’ is an upright evergreen shrub with rosemary-like, linear, silvery-grey leaves and compact clusters of scented white flower-heads from red buds, in dense terminal clusters

Passiflora caerulea

A vigorous, large, evergreen climber about 10m tall, bearing rich green leaves to 10cm long, with 5-7 finger-like lobes. Bowl-shaped flowers to 8cm in width, are white, with blue and purple coronal filaments, flowering from summer to autumn, then followed by ovoid orange fruits 4cm long. Fruits are edible but not particularly tasty

Armeria maritima

A clump-forming evergreen perennial with dense, needle-like dark green leaves and erect stems to 20cm, bearing compact clusters of white, pink or red-purple flowerheads to 2.5cm wide, in late spring and summer

Artemisia absinthium

An upright deciduous perennial, with finely divided, highly aromatic grey-green foliage and rather insignificant yellowish flowers in late summer.

• Baptisia australis
• Bergenia: 30-60cm (1-2ft) x 45-60cm (18in-2ft)
• Euphorbia: Height and spread variable according to cultivar
• Euphorbia amygdaloides var. robbiae

A spreading evergreen perennial to 50cm in height, forming colonies of rosettes of oblong, dark green leaves from which arise large rounded sprays of yellow-green flowers

• Eryngium: Height and spread variable according to cultivar
• Eryngium giganteum

A robust biennial or short-lived perennial forming a rosette of heart-shaped basal leaves, and spiny stem leaves, with cone-like umbels of tiny blue flowers sitting within a rosette of spiny silvery-grey bracts

• Echinops: Height and spread variable according to cultivar
• Heuchera: Height and spread variable according to cultivar
• Hylotelephium telephium (Atropurpureum Group) ‘Purple Emperor’

A clump-forming deciduous perennial to 50cm tall, with broad, fleshy deep purple leaves on dark red stems, and rounded clusters of small, pale purplish-pink flowers in late summer

Nepeta cataria

A perennial forming a loose clump of branched stems with oval to triangular, greyish-green, toothed, strongly aromatic leaves. Small white flowers spotted with violet are borne in long, dense, terminal spikes from summer into autumn

• Osteospermum jucundum
• Verbena including V. rigida AGM and V. bonariensis AGM: Height and spread variable according to cultivar
• Verbena officinalis ‘Bampton’

A bushy, upright perennial with fine, wiry branches bearing deep purple foliage and, from mid-summer to mid autumn, short spikes of small purplish-pink flowers

Veronica spicata – Native to GB and Ireland

A clump-forming perennial to 60cm tall with toothed, lance-shaped leaves up to 8cm long covered with silver hairs. Dense spikes of small, star-shaped, bright blue flowers are borne in summer

Melica uniflora f. albida: AGM – Native to GB and Ireland

A delicate looking, creeping perennial grass with bright green deciduous foliage, native to the UK. Green flower stems with white flowers and yellow stamens appear from June to July

• Panicum virgatum: 1m x 75cm (3ft x 30in)
• Pennisetum alopecuroides: 0.6-1.5 x 0.6-1.2m (2-5ft x 2-4ft)
• Pennisetum rubrum

‘Rubrum’ is a hybrid between P. macrostachyum and P. setaceum. Strappy, dark-red foliage emerges in spring, initially flushed green. Arching stems bear bottlebrush-shaped flowers in late summer to autumn, their silver and red plumes eventually becoming brown