(Siberian Yarrow)

Achille sibirica is a slender hardy perennial native to the northern regions of North America and the Northern Hemisphere. The plant makes an upright stem with distinctive narrow leaves that have minutely saw-tooted edges, unlike the ferny leaves of many species in the Achillea genus. The flowers have stubby white or pink petals and a prominent yellow center. They grow in a loose cluster at the top of the stem. Flowering runs through summer and into early fall.

This species prefers full or partial...

(Siberian Yarrow)

This cultivar, 'Stephanie Cohen,' is a hardy perennial that differs from its parent, Achillea sibirica,in the color of its flower petals, which is a bluish pink. The flowers have yellow centers and are borne in a loose cluster at the top of a single stem. Theleaves are narrow and minutely saw-toothed, unlike the ferny leaves of many species of Achillea. Flowering runs through summer and into early fall.

Like the species, 'Stephanie Cohen' prefers full or partial sun on well-drained moist soil....

(Siberian Yarrow)

This subspecies of Achillea sibirica, a slender hardy perennial native to the Northern Hemisphere, makes an upright stem with distinctive lance-shaped leaves that have saw-tooted edges. The flowers have stubby white or pink petals and a prominent yellow center. They grow in a loose cluster at the top of the stem. Flowering runs through summer and into early fall.

This species prefers full or partial sun on well-drained moist soil. To make a notable show, group several plants together in a mixed...

(Love Parade Siberian Yarrow, Siberian Yarrow)

Delicate clusters of palest pink flowers blanket this tough perennial in early summer. In spring, the clump-forming 'Love Parade' sends up upright stems lined with glossy dark green leaves. Its long-lasting flowers are lavender pink when they first open and fade to a dirty white as they age. This hardy and resilient plant will continue to flower into early fall, if regularly deadheaded, and is attractive to butterflies.

Siberian yarrow is very easy to grow. Full to partial sun is required...

(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,...

(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...

(Carmichael's Monkshood)

Autumn flowered monkshood is a tuberous-rooted perennial originally from China and valued for its late season bloom. The leaves are produced in mounds and are delphinium-like, dark green, deeply dissected, toothed and have a leathery texture. Deep blue-violet flowers, each curiously shaped like a helmet or hood are produced atop leafy, tall, stately spikes in late summer and fall.

Plant monkshood in evenly moist but not wet soil. Full sun to partly shady locations are preferred. Monkshood grows...