



Actual size and flowering may vary slightly based on season.
Powis Castle
Powis Castle is a mounding shrub grown for its abundant soft, silver, lacy leaves. It grows about 2 to 3 feet tall and spreads 3 to 6 feet, giving cool silver contrast in beds and mass plantings. The leaves are slightly fragrant, and deer and rabbits tend to leave it alone.
Best for: silver foliage contrast in beds and borders, mass plantings, and sunny beds.
Its abundant silver leaves cool down green and bright flower colors in a bed.
It forms mounds about 2 to 3 feet tall and 3 to 6 feet wide, good for filling beds and borders.
Its slightly fragrant leaves help keep deer and rabbits away, so it holds up in yards where they browse.
It handles full sun in the Valley, but soggy, poorly drained soil is a problem for it.
- Plant to plant3 ft apart
It grows in full sun in the Valley, and it also takes some afternoon shade.
Water a new plant every 2 to 4 days for the first few weeks, then stretch the time between waterings. Once rooted, give it little water.
Plant it in soil that drains. It tolerates clay and rocky soil if water does not stand.
Drainage test first. Dig the hole and fill it with water. If water is still sitting in the hole a day later, you likely hit caliche, clay or hard soil, so fix the drainage before planting. If it drains very fast, the soil is sandy. Standing water around roots is a common reason new plants fail.
Weed cloth. Cut it away from the planting hole and where the roots will spread. Remove any plastic sheeting completely, since it keeps water and air out of the soil.
Rock or decomposed granite with no soil underneath. Bring in soil close in texture to your native soil, mix it with the soil below, and build up enough depth for roots before planting.
If you can break through. Use a breaker bar, pick, or jackhammer. Dig through the caliche and break out the solid chunks. Backfill with the soil you dug out, with no compost or manure in the hole. Confirm drainage before planting.
If you cannot break through. Dig narrow holes through the hard layer beside the root ball, not under it, and refill them with the same soil, not gravel. If it still will not drain, plant on a low mound of the same soil.
Root ball. Check the outside edges for any roots circling around. Loosen or cut those so they grow outward. Do not break up the center of the root ball.
Depth. The top of the root ball should sit at or just slightly above the surrounding soil level. Planting too deep can lead to rot and kill the plant.
Drip emitters. At planting, put the emitters on the root ball, on different sides of the plant. After about 2 months, move them to the outer edge of the root ball. Over the first year, add emitters farther out toward the edge of the branches as roots grow. Once a plant is rooted, never water only at the trunk.
How big does Powis Castle get?
It grows about 2 to 3 feet tall and spreads 3 to 6 feet wide.
Does Powis Castle need shade in Phoenix?
It grows in full sun, and it also takes some afternoon shade.
What soil does it need?
Plant it in soil that drains well. It tolerates clay and rocky soil if water drains.
Is Powis Castle fragrant?
Yes. The leaves are slightly fragrant, and that helps keep deer and rabbits away.
Does it flower?
It has small yellow flowers that are not showy. People grow it for its silver leaves.
How much water does it need?
It needs little water once rooted.
Is it cold hardy?
Yes. It is rated to about -10°F.
Where did the name come from?
It was bred for the gardens at Powis Castle in Wales.
Powis Castle for sale in Arizona, delivered to you
Powis Castle is a mounding artemisia with soft, silver, lacy leaves. Below: size, sun, water, soil and use.
Sourced from trusted Arizona growers and delivered directly to your door, job site, or property. We deliver across the Valley and to nearby towns, and quote delivery anywhere else in Arizona.
Powis Castle artemisia in the Valley
A mounding shrub with soft silver leaves; it grows in full sun here.
Powis Castle size
About 2 to 3 feet tall and 3 to 6 feet wide.
Silver foliage plants for Phoenix yards
Its lacy silver leaves contrast with green plants and bright flowers.
Powis Castle soil
It needs soil that drains and tolerates clay and rocky soil.
Powis Castle and rabbits
Its fragrant leaves help deter deer and rabbits.
Watering Powis Castle
Give it little water once it is rooted.
We deliver across the Valley, from Phoenix, Scottsdale and Mesa out to San Tan Valley, Maricopa and Casa Grande, and up to Prescott, Sedona, Payson and Globe. See delivery areas and rates.



