Silver and blue foliage plants
Artemisia 'Powis Castle' Always a favourite choice for a silver shrub, this forms a good-sized hummock, and it’s finely cut leaves are a good, bright silver - some other artemisias are distinctly grey in comparison.
Ballota pseudodictamnus A pale silver- green little evergreen, softly furry all over its stems and leaves.
Festuca glauca A neat, tufty grass with a distinctly blue tinge to its blades. The tussocks remain all year and look brilliant after a frosty night, but festuca is at its bluest when its new growth has colored up in spring.
Helichrysum petiolare This tender little plant is apt to sprawl, which makes it very popular for summer containers and baskets. Its all-over furry grayness is appealing in the sun but it looks very sad in grey weather
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Hosta 'Halcyon' One of the bluest-leaved of all hostas, its ribbed leaves keep their color best in the shade.
Juniperus horizontalis 'Glauca' The smoky blue of blue conifers is a good mixer, and this one makes a low, spreading mat that looks at once solid and cloudy.
Onopordum nervosum There is no mistaking this spiky, spiny giant thistle. Stem, prickly leaves and flower buds are all covered in white felt, which makes it a real eye-catcher.
Rhamnus alaternus
'Argenteovariegata' Buckthorns are useful hardy shrubs, but this one is far more attractive than its workaday cousins. Its grey- green leaves are edged with a broad white margin that gives it much greater style and appeal.
Ruta graveolens `Jackman's Blue' Rue makes a neat mound of sea-blue leaves, each finely cut but with noticeably round ends. A very pretty little herb, and highly aromatic, but not one for the kitchen. The yellow flowers are not much of an attraction.
Santolina pinnata subsp
Neapolitana A dense mass of wispy stems gives the impression of a rounded silver cloud. Santolinas look good planted enmasse and are at their most silvery on poor soil.
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