Powis Castle Wormwood Plants

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Shade Full Sun, Partial Shade
Area Coastal Areas, Exposed Windy Areas, Frost Pockets, Scotland & The North
Soil Good, Well Drained
Type Pot Grown
Also Good Foliage

Artemisia arborescens Powis Castle

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SIZES 1-2 3-910+
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Artemisia arborescens Powis Castle

Despite having no flowers worth mentioning Artemisia Powis Castle is a seriously popular plant. Those in the know prize it for its wonderful airy, light feathery foliage in shimmering silvery green. If, however, you're after colour and flowers in your borders, take a look at our collection of perennials here.

However, it's that supporting "foliage" act that really makes the stars of pots and borders shine; Powis Castle forms a backdrop in front of which showier perennials can pose, preen and look their very best. Artemisia is also great for texture, which should never be underestimated, both in container arrangements and borders. And let's not forget that coveted RHS Award of Garden Merit, which means it's been tried and tested and found to grow well in pretty much all garden conditions.

In the garden

Sun, sun and more sun is what this pretty perennial needs. So give it an open spot in a south-facing border, or a roomy container on a sunny patio and it will thrive, growing up to 90cm – as long as it's not planted on clay. If you garden on clay, dig in generous amounts of garden compost and horticultural grit and you might just get away with it. Artemisias hate to get cold and waterlogged in winter clay. Cut it back in early spring to maintain its shape, treating it a little like a lavender; it's a woody perennial that needs a trim but won't grow from old wood.

Knowing what to plant it with is the key to making Artemisia work in your garden. Pinks and purples are fabulous against its silvery foliage, so choose flowering perennials such as Eryngiums, Campanulas, dark blue salvias and rich purple Hidcote lavender as companions. Furry, silver-leaved Stachys (lambs ears) make a gorgeous textural contrast, too. Or use it to underplant a soft pink shrub rose such as Nathalie Nypels for a dreamy silver and pink palette. The same advice works well in pots: give it a decent sized container and plant with, say, rich-pink marguerites, deep purple petunias or pale pink bacopa.


  • Colour: silvery-green foliage
  • Flowering: insignificant yellow flowers in Aug
  • Foliage: silver-green, feathery and light
  • Height: 60cm
  • Spread: 90cm
  • Spacing: 80cm
  • Position: sun
  • Soil: well-drained, any but clay

A grand lineage

The plant was popularised by its use at Powis Castle, once home to Robert Clive and his treasures collected in India. A medieval castle just outside Welshpool, it's a star in the National Trust firmament, with sweeping views to the huge gardens that tumble dramatically below. It also has some of the most magnificent container plantings we've ever seen. Also called Brass Band in some older sources. 

  • Small Box

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    including VAT per order


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  • Standard box

    (Bareroots up to
    1.2m & plants in p9 pots)


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    and incl. 7.5L)


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  • Trees & Hedging

    (Bareroot plants and trees
    over 1.2 metres in height)


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  • Pallets

    (Root balls, large pots,
    trees etc)


    including VAT per order


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Bareroot planting is best done between October and April
Bareroot and potted - what's the difference?

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