Regions / Eastern Washington, Eastern Oregon, And Idaho

 

Eastern Washington, Eastern Oregon, Idaho, gardening, garden

Eastern Washington, Eastern Oregon, And Idaho

Selecting plants suited to the Eastern Washington, Eastern Oregon, and Idaho climate is a key step to success.

A plant's performance is governed by many climate related factors including the length of the growing season, the amount of rainfall, winter lows, summer highs, wind or humidity. Various initiatives have taken place to determine how well plants would withstand the cold winter temperatures (Plant Hardiness Zones) or when plants would start suffering from the heat (Plant Heat Zones). A more sophisticated approach has been followed by Sunset which defines Climate Zone Maps based not only on hardiness or heat tolerance, but also on precipitations, wind, humidity and various other climate related factors.

Eastern Washington, Eastern Oregon, and Idaho belong to Climate Zones 1 through 3. If you know your climate zone, find the best plants or exciting garden ideas for your geographic area.




Achillea sibirica subsp. camschatica 'Love Parade' (Yarrow)

Native to Siberia, Achillea sibirica subsp. camschatica 'Love Parade' (Yarrow) is an upright, tufted, perennial with large umbels of soft pink flowers with pale yellow stamens from early summer to early fall. Attractive to butterflies, the charming blossoms rise atop an equally attractive foliage of bright green, almost shiny, leathery, dark green, lance-shaped leaves. Good-looking, compact, bushy and heat loving, this eye-catching beauty enlivens any sunny corner of the garden.

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Aconitum carmichaelii 'Arendsii' (Monkshood)

Blooming later than most Aconitum species, award-winning Aconitum carmichaelii 'Arendsii'(Monkshood) is an erect, tuberous perennial with dense spires of rich azure-blue flowers in early to mid fall. Its hooded flowers resemble the hood worn by medieval monks, hence the common names of monkshood. They are borne atop thick, rigid stems clad with a handsome foliage of deeply divided, leathery, dark green leaves.

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Aconitum napellus (Monkshood)

Native to Western and Central Europe, Aconitum napellus brings showy, densely packed spikes of deep purplish-blue flowers and attractive foliage in the shade garden.

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Acorus calamus 'Variegatus' (Variegated Sweet Flag)

Ideal for wet areas, Acorus calamus 'Variegatus' (Variegated Sweet Flag) is an attractive herbaceous perennial forming a tuft of gracefully arching, narrow, sword-shaped leaves adorned with creamy-white and green stripes. Often displaying a nice pink tinge in cold weather, the foliage is sweetly fragrant when bruised.

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Acorus gramineus 'Ogon' (Golden Variegated Sweet Flag)

Ideal for wet areas, Acorus gramineus 'Ogon' (Golden Variegated Sweet Flag) is a semi-evergreen herbaceous perennial forming an attractive tuft of gracefully arching, narrow, sword-shaped, golden-yellow leaves adorned with olive green stripes. The foliage is sweetly fragrant when bruised and evergreen in mild winter areas.

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Actaea pachypoda (White Baneberry)

Perfect for shade gardens, Actaea pachypoda (White Baneberry) is an herbaceous perennial forming clumps of finely divided, bright green foliage, enhanced by dense, globular clusters of small fluffy white flowers in late spring and early summer.

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Actaea racemosa (Black Cohosh)

Striking all summer long, award-winning Actaea racemosa (Black Cohosh) is a beautiful perennial with deep green, finely divided foliage, enhanced by gracefully arching wands of fragrant white flowers in late summer and fall. The blooms are packed in fluffy spikes, up to 2 ft. long (60 cm), which rise well above the foliage, and mature into attractive seed pods.

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Actaea simplex 'Pink Spike' (Baneberry)

Striking all summer long, Actaea simplex 'Pink Spike' (Baneberry) is a beautiful perennial with chocolate-purple, finely divided foliage, enhanced by gracefully arching wands of fragrant pink flowers in late summer and fall. Raspberry-pink in bud, opening to pale pink, the heavily scented flowers are packed in fluffy spikes along black waving stems.

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Actaea simplex (Atropurpurea Group) 'Black Negligee' (Baneberry)

Rich of an exotic perfume of grape and jasmine, Actaea simplex 'Black Negligee' (Baneberry) is a herbaceous perennial prized for its finely-divided, near-black leaves and eye-catching flower spikes. Standing out in late summer to early fall, attractive, dark stemmed fluffy spires, packed with deliciously fragrant creamy-white flowers adorned with a purple tinge, gracefully bob and sway in the breeze.

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Actaea simplex (Atropurpurea Group) 'Brunette' (Baneberry)

Striking all summer long, award-winning Actaea simplex 'Brunette' (Baneberry) is a beautiful perennial with purple black, finely divided foliage, enhanced by gracefully arching wands of fragrant white flowers in late summer and fall. Purple-pink in bud, opening to white, the heavily scented flowers are packed in fluffy spikes along black waving stems. 'Brunette' provides interest for months.

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Actaea simplex (Atropurpurea Group) 'Hillside Black Beauty' (Baneberry)

Striking all summer long, award-winning Actaea simplex 'Hillside Black Beauty' (Baneberry) is a beautiful perennial with dark reddish-purple, finely divided foliage, enhanced by gracefully arching wands of scented, pale pink flowers in late summer and fall. Their strong fragrance is reminiscent of summer phlox and ripe purple grapes.

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Actaea simplex (Atropurpurea Group) 'James Compton' (Baneberry)

Opening from pink buds in late summer to early fall, attractive, purple stemmed fluffy spires, packed with deliciously fragrant white flowers with a pink tinge, gracefully bob and sway in the breeze

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Actaea simplex (Atropurpurea Group) 'Mountain Wave' (Baneberry)

Actaea simplex 'Mountain Wave' (Baneberry) is a herbaceous perennial prized for its finely-divided, bronze leaves and eye-catching flower spikes. Standing out in late summer to early fall, attractive, dark stemmed fluffy spires, packed with deliciously fragrant creamy-white flowers adorned with a purple tinge, gracefully bob and sway in the breeze.

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Actaea simplex (Bugbane)

Fabulous at adding architectural height and late summer blooms to a shaded border, Actaea Simplex (Bugbane), formerly known as Cimicifuga Simplex, is very eye-catching with its long, fluffy spires packed with strongly fragrant, tiny starry creamy-white flowers.

Actinidia arguta 'Issai' (Hardy Kiwi Vine)

Grown for its attractive foliage and edible fruit, Actinidia arguta 'Issai' (Hardy Kiwi Vine) is a compact, deciduous climber that produces grape-sized, smooth-skinned, green fruits in late summer to early fall. While they are smaller than grocery store varieties, they are slightly sweeter and enjoy an excellent flavor.

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Actinidia deliciosa (Kiwifruit )

Actinidia deliciosa (Kiwifruit) is a vigorous, deciduous, woody-stemmed, twining climber with broadly ovate, heart-shaped, lustrous mid-green leaves, 5-8 in. long (12-20 cm). Slightly fragrant clusters of cup-shaped, creamy-white flowers are borne in late spring.

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Actinidia kolomikta (Variegated Kiwi Vine)

Prized for its flamboyant foliage, Actinidia kolomikta (Variegated Kiwi Vine) is a large vigorous deciduous climber producing a striking foliage mass of heart-shaped leaves, 3-5 in. long (7-12 cm), some in solid green, others white-splashed green and others heavily variegated with pink.

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Actinidia polygama (Silver Vine)

Creating a sparkling effect, Actinidia polygama (Silver Vine) is a vigorous, scrambling/twining, deciduous climber producing a striking foliage mass of heart-shaped, dark green leaves, 3-5 in. long (7-12 cm), adorned with silvery-white tips - as if each leaf has been dipped in paint.

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Adiantum aleuticum (Maidenhair Fern)

Incredibly attractive, Adiantum aleuticum (Maidenhair Fern) is a deciduous or semi-evergreen, perennial fern with graceful, bright green fronds which open like the fingers of a hand atop upright, shiny, purple-black wiry stems. Each finger is further divided into a series of triangular segments (pinnules).

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Adiantum venustum (Himalayan Maidenhair)

Incredibly attractive, Adiantum venustum (Himalayan Maidenhair) is a deciduous fern, almost evergreen in mild areas, with broadly triangular fronds composed of many small fan-shaped segments. Emerging in late winter to early spring, the new fronds display a charming salmon flush before maturing to fresh spring green.

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Agastache rugosa 'Golden Jubilee' (Korean Mint)

Luminous, Agastache rugosa Golden Jubilee' (Korean Mint) is an upright, clump-forming perennial with attractive spikes of fragrant, tubular, lavender-blue flowers from midsummer to early fall. Adding lovely vertical lines to the landscape, they are held over the golden-green foliage of aromatic, lance-shaped leaves.

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Agastache rupestris (Sunset Hyssop)

Agastache rupestris features sweetly fragrant, tubular salmon-orange flowers with purplish calyxes all summer. Eye-popping, it provides an outstanding garden performance and adds color as well as a lovely spiky texture to the garden. Hummingbirds will thank you for it.

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Agave colorata (Mescal Ceniza)

Slow growing, Agave colorata (Mescal Ceniza) is an evergreen, perennial succulent forming a rosette of fleshy, nearly spoon-shaped, powdery blue leaves with particularly fascinating crossbanding. Rough textured, the leaves are deeply scalloped and lined with formidable, dark brown teeth along their margins and tipped with a stout terminal spine.

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Agave havardiana (Harvard Agave)

Extremely cold hardy, Agave havardiana (Havard Agave) is an evergreen, perennial succulent forming a tight rosette of fleshy, broad, cupped, silver-gray leaves. Adding an attractive texture and interest year-round, the leaves are heavily lined with dark brown teeth along their margins and tipped with a wickedly sharp black terminal spine.

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