(Dwarf Wooly Yarrow, King Edward Yarrow)

Silvery-leaved, low-growing and drought tolerant, this is the perfect small yarrow for rock gardens and sunny border edges. A cross between the species Achillea clavennae and Achillea tomentosa, 'King Edward' forms a mat of narrow, gray-green, minutely toothed leaves. Loose, flattened clusters of buttery, pale primrose flowers bloom on short stems from late spring to midsummer. These are attractive to butterflies and have a soft, pretty appearance. Regular deadheading may extend...

(Giant Needlegrass, Giant Ricegrass, Giant Stipa)

Upright, graceful leaf blades of giant needlegrass create billowy tufts across the landscape. A cool-season perennial grass that often is short lived, it's native to the rocky and gravelly soils -- especially chaparral habitats -- from the Cascade Mountains of central California southward into Mexico's Baja peninsula. The root system is fibrous.

This bunching grass forms a V-shaped clump with airy, medium green leaves. Leaf blades are thin and held upright and occur in the moisture and cool...

(Striped Sweet Flag, Sweet Flag)

Striped sweet flag is an herbaceous perennial that is native throughout much of the Northern Hemisphere. It has inconspicuous flowers and is grown primarily for its tall, upright, broad, iris-like foliage. Acorus calmus 'Variegatus' has very showy white bordered leaves. These plants spread by rhizomes (underground stems) and grow best in moist boggy areas with full to partial sun. Semi-aquatic in nature, sweet flag works well in naturalistic plantings along waterways or in gardens with moist,...

(Grassleaf Sweet Flag)

Grassleaf sweet flag is a semi-evergreen perennial that originates from Japan. It is grown for its neat clumping habit and attractive grass-like foliage, which is aromatic when crushed. There are many highly desirable cultivars of sweet flag such as the golden variegated 'Golden Edge' and the dwarf 'Ogon'. This perennial is easy to grow if provided with rich evenly moist soil and full to partial sun. Plant in boggy gardens or in fertile beds and borders. These plants will not tolerate deep standing...

(Golden Edge Sweet Flag, Grassleaf Sweet Flag)

Golden edge sweet flag is an evergreen to semi-evergreen perennial that originates from Japan. It is admired for its neat clumping habit and attractive grass-like foliage that is aromatic when crushed. Its leaves are bright yellow with a narrow green stripe down the center of each blade.

This perennial is easy to grow if provided with rich, evenly moist soil and full to partial sun and looks great when mixed with other perennials for moist sites. Though well-suited to boggy gardens, plants will...

(Dwarf Golden Sweet Flag, Grassleaf Sweet Flag)

Dwarf golden grassleaf sweet flag is an compact evergreen to semi-evergreen perennial that originates from Japan. It is grown for compact, clump-forming habit and beautiful golden grass-like foliage, which is aromatic when crushed.

This perennial is easy to grow if provided with rich, evenly moist soil and full to partial sun and looks great when mixed with other perennials for moist sites. Though well-suited to boggy gardens, plants will not tolerate deep standing water.

(Grassleaf Sweet Flag, Oborozuki Sweet Flag)

Oborozuki sweet flag is a perennial native to Japan. It is grown for its neat clumping habit and grass-like foliage, which is aromatic when crushed. Unlike the wild-type sweet flag, the cultivar Oborozuki sweet flag is compact and has attractive variegated leaves that are streaked with with golden yellow. This perennial is easy to grow if provided with rich evenly moist soil and full to partial sun. Plant in boggy gardens or in fertile beds and borders. These plants will not tolerate deep standing...

(Grassleaf Sweet Flag, Ogon Sweet Flag)

Ogon sweet flag is a perennial native to Japan. It is grown for its neat clumping habit and grass-like foliage, which is aromatic when crushed. Unlike the wild-type sweet flag, the cultivar Ogon sweet flag has attractive variegated leaves of pale green streaked with cream. This perennial is easy to grow if provided with rich evenly moist soil and full to partial sun. Plant in boggy gardens or in fertile beds and borders. These plants will not tolerate deep standing water.

(Grassleaf Sweet Flag, Variegated Sweet Flag)

Variegated sweet flag Ogon sweet flag is a semi-evergreen perennial that originates from Japan. It is grown for its neat clumping habit and grass-like foliage, which is aromatic when crushed. The cultivar ‘Variegatus’ has attractive variegated leaves of green streaked with ivory. This perennial is easy to grow if provided with rich evenly moist soil and full to partial sun. Plant in boggy gardens or in fertile beds and borders. These plants will not tolerate deep standing water.

(Japanese Bugbane)

Robust, weeping, bottlebrush-like plumes of fragrant white flowers top this tall perennial's stems from midsummer to early fall. Japanese bugbane is a woodland perennial that forms a clump, and is native to Japan and extreme eastern Asia. This species tends to flower later than other bugbanes grown in gardens.

The glossy light to medium green leaves are compound - having three leaflets each and attached in groups of three on a leaf stalk. The individual leaflets are oval but are irregularly toothed....