We have found 31 plants that meet your criteria.

Wormwood
Artemisia absinthium 'Lambrook Silver' Wormwood Striking silvery foliage £7.99 Buy
Western mugwort
Artemisia ludoviciana 'Valerie Finnis' Western mugwort Decorative, silvery foliage £7.99 Buy
wormwood
Artemisia 'Powis Castle' wormwood Silvery, aromatic foliage £8.99 Buy
Siberian iris
Iris chrysographes black-flowered Siberian iris Stunning, almost black flowers. For a damp spot £8.99 Buy
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Siberian iris (syn. 'Alba')
Iris sanguinea 'Snow Queen' Siberian iris (syn. 'Alba') Great for adding vertical interest NOW £6.99 Buy
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bearded iris
Iris 'Jane Phillips' bearded iris A popular variety with blue flowers NOW £6.99 Buy
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bearded iris
Iris 'Sultan's Palace' bearded iris Sultry, maroon flowers NOW £6.99 Buy
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bearded iris
Iris 'White City' bearded iris Magnificent in contemporary and cottage settings NOW £6.99 Buy
lavender
Lavandula × intermedia 'Grosso' lavender Considered by many to have the best scent £8.99 Buy
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lavender promotion - 6 pack
Lavandula angustifolia lavender promotion - 6 pack... 6 Lavenders for less than £2.50 each NOW £14.99 Buy
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lavender
Lavandula angustifolia 'Hidcote' lavender A compact lavender, with intense, violet flowers NOW £5.99 Buy
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lavender
Lavandula angustifolia Melissa Lilac ('Dow4') (PBR) lavender Large, lilac flowers in... NOW £5.99 Buy
lavender
Lavandula angustifolia 'Munstead' lavender A compact variety with blue-purple flowers £7.99 Buy
French lavender (syn. Papillon)
Lavandula pedunculata subsp. pedunculata French lavender (syn. Papillon) Distinctive butterfly-like, mauve flowers £8.99 Buy
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French lavender
Lavandula 'Fathead' French lavender A hardy French lavender £8.99 Buy
New
French lavender
Lavandula 'Helmsdale' (PBR) French lavender Burgundy-purple flowers topped by purple bracts £8.99 Buy
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French lavender
Lavandula 'Regal Splendour' (PBR) French lavender Incredible dark purple-violet flags £8.99 Buy
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common myrtle
Myrtus communis common myrtle Evergreen shrub with white, fluffy flowers NOW £9.99 Buy
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myrtle
Myrtus communis subsp.tarentina myrtle Compact, evergreen shrub NOW £9.99 Buy
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rosemary promotion - 6 pack
Rosmarinus officinalis rosemary promotion - 6 pack... 6 rosemaries for less than £2.50 each NOW £14.99 Buy