(Goldie Yarrow, Wooly Yarrow)

This Achillea species, also known as Wooly yarrow, is a small hardy perennial from southern Europe and western Asia with distinctive gray-green leaves that are lined with so many chubby leaflets that they look almost wooly. The leaves spread close to the ground in a thick, mussy mat from which flower stems rise, topped with a dense cluster of small yellow flowers. Bloom starts in early summer and continues to early fall.

Wooly yarrow has several uses:it can make a thick, flowering groundcover,...

(Dwarf Wooly Yarrow)

Silvery-leaved, low-growing and drought tolerant, this is the perfect small yarrow for rock gardens and sunny border edges. A hybrid of the species Achillea clavennae and Achillea tomentosa, it 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 flowering.

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(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...

(Sweet Flag)

Calamus is an herbaceous perennial that is native throughout much of the United States and Canada. It has inconspicuous flowers and is grown primarily for its tall, upright, broad, iris-like foliage. One particularly attractive cultivar is 'Argenteostriatus', which has beautifully variegated leaves. These plants spread by rhizomes and grow best in moist boggy areas with full to partial sun. Semi-aquatic in nature, calamus works well in naturalistic plantings along waterways or in gardens with moist...

(Striped Sweet Flag, Sweet Flag)

Striped sweet flag, or striped calamus, is an herbaceous perennial that is native throughout much of the United States and Canada. It has inconspicuous flowers and is grown primarily for its tall, upright, iris-like foliage that is beautifully variegated with cream striations. These plants spread by rhizomes and grow best in moist boggy areas with full to partial sun. Semi-aquatic in nature, striped sweet flag works well in naturalistic plantings along waterways or in gardens with moist fertile soil.

(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.