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Achnatherum calamagrostis
  • Common name: Silver Spike Grass
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 36" x 36"
  • Native to: Europe

This graceful clump grass produces multiple silvery spikes in late spring. The seed heads persist throughout the growing season and remain beautiful into winter.

Agastache foeniculum
  • Common name: Annise Hyssop
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 3-4' x 3-4'
  • Native to: Great Plains

Multiple spikes of purple flowers in summer provide an excellent resource for pollinators. Bushy, vigorous, great foundation plant.

Agastache rupestris
  • Common name: Threadleaf Giant Hyssop
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 36 in. x 18 in.
  • Native to: Southwest US

Threadleaf Giant Hyssop has numerous spikes of uniquely-colored orange-purple tubular flowers over fragrant, finely divided leaves. It blooms in the heat of mid-summer and persists into fall. Outstanding hummingbird plant and nectar source for bees.  More info here.

Allium cernuum
  • Common name: Nodding Onion
  • Zone: 3
  • Exposure: Sun or Part Shade
  • Height x Width: 12-18" x 12"
  • Native to: Idaho

True to its name, Nodding Onion produces lovely drooping clusters of pale white or purple flowers in mid-summer. Supports butterflies and native bees. Deer resistant. Foliage is evergreen.

Anaphalis margaritacea
  • Common name: Pearly Everlasting
  • Zone: 3
  • Exposure: Sun / Part shade
  • Height x Width: 1-3 ft. x 1-2 ft.
  • Native to: Idaho

Pearly Everlasting is a sturdy, undemanding native wildflower that can be grown in dramatic drifts in sun or part shade.Hundreds of glowing, white flowers atop woolly, erect stems account for its “pearly” appearance. Fine food source for butterflies. More info here and  here.

Argemone pleiacantha
  • Common name: Southwestern Prickly Poppy
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 1-3' x 1-3'
  • Native to: AZ, NM

Prickly gray-green leaves support huge, white poppy-like flowers. More information here.

Asclepias fascicularis
  • Common name: Narrow Leaf Milkweed
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 1-3' x 1'
  • Native to: Idaho

Narrow Leaf Milkweed, native to Southern Idaho, is smaller and more drought-tolerant than the better-known Showy Milkweed. Mauve-pink flowers emerge in mid-summer. With extra water, bloom time is extended. Host plant for Monarch butterflies.

Asclepias tuberosa
  • Common name: Butterfly Milkweed
  • Zone: 3
  • Exposure: Sun / Part shade
  • Height x Width: 12-18 in. x 12-24 in.
  • Native to: West Central US

Butterfly Milkweed has thick umbels of bright orange flowers over narrow leaves. Central U.S. native supporting Monarch Butterfly larvae. More info here.

 

Campanula carpatica
  • Common name: Carpathian Harebells
  • Zone: 4
  • Exposure: Sun or Part Shade
  • Height x Width: 10" x 10"
  • Native to: Southeastern Europe

Carpathian Harebells is a more compact version of our native harebells, with larger flowers and a later bloom time. Charming!

Campanula rotundifolia
  • Common name: Harebells
  • Zone: 3
  • Exposure: Sun / Part shade
  • Height x Width: 12 in. x 15 in.
  • Native to: Idaho

Harebells is a lovely little wildflower is a native to most of the U.S., including Idaho. Its nodding blue flowers are held on wiry stems above attractive basal foliage. Great for borders, rock gardens. Pollinators: native bees. More info here.

Dalea purpurea
  • Common name: Purple Prairie Clover
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 18" x 18"
  • Native to: Great Plains

Purple Prairie Clover produces lovely purple bottle-brushes on erect stems. Perfect specimen plant or as part of a meadow or prairie planting. Long-lived, with a deep taproot. Often found on eroded, depleted soils, including caliche. Supports bees and butterflies and fixes nitrogen.

Echinacea angustifolia
  • Common name: Black Samson Coneflower
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 2-3 ft. x 2 ft.
  • Native to: Central / Eastern US

This tap-rooted perennial is found in open, dry prairies of the Midwest, and is prized for its medicinal value. It is also highly ornamental, with lovely purple coneflowers floating above narrow-leaved stalks. Good nectar plant for butterflies and bees.

Erigeron subtrinervis
  • Common name: Rocky Mountain Daisy or Threenerve Fleabane
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 2' x 2'
  • Native to: Idaho

Rocky Mountain Daisy is a freely flowering purple daisy that brightens up the mid-summer garden. It is similar to Showy Fleabane (Erigeron speciosus) but is taller and blooms a bit later. Supports bees and butterflies.

Eriogonum jamesii
  • Common name: James’ Wild Buckwheat
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 5-6 in. x 20 in.
  • Native to: Mountain West US

This Buckwheat forms large, dense mats covered with cream-colored to yellow flowers. It blooms during the heat of mid-summer when many other Buckwheats are done.

 

Eriogonum racemosum
  • Common name: Redroot Buckwheat
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 16" x 10"
  • Native to: Southwest

This striking buckwheat bears long racemes of white or white/pink flowers atop tall, leafless stems. In its native habitat of low foothills and mountain dry meadows from New Mexico to Nevada, it can grow in colonies of hundreds or thousands

Eryngium yuccifolium
  • Common name: Rattlesnake Master
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 2-5 ft. hight
  • Native to: Midwestern Prairies (US)

Rattlesnake Master is a tall, striking accent plant with stiff, yucca-like foliage and 1” white thistle-like flowers. Name derives from traditional belief that root will cure snake bite. Native to midwestern prairies. Pollinators: bees, beetles and flies.

Geum triflorum
  • Common name: Prairie Smoke
  • Zone: 2
  • Exposure: Sun / Part shade
  • Height x Width: 12 in. x 12 in.
  • Native to: Idaho

Prairie Smoke has early summer blooms, followed by distinctive feathery pink seed heads.  Appreciates moderate water and does best in part shade, except at higher elevations, where it thrives in full sun. Pollinators: native bees. More info here.

Heuchera cylindrica
  • Common name: Coralbells
  • Zone: 3
  • Exposure: Sun / Part shade
  • Height x Width: 18 in. x 12 in.
  • Native to: Idaho

Coralbells has dramatic spikes of cream to white flowers rise from a base of scalloped deep green leaves. Favors rock outcroppings; great in full sun or dry shade. Very long blooming in our Boise garden. Choice!

Holodiscus dumosus
  • Common name: Mountain Spray, Rock Spirea
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 6-8' x 6-8'
  • Native to: Idaho

Similar to the more common Ocean Spray, but growing in hotter, drier conditions.  It thrives in dry rocky desert valleys and hillsides from Idaho south to Arizona and New Mexico. Foamy waves of white flowers cover this native shrub in summer. Supports native pollinators.

Kniphofia uvaria
  • Common name: Red Hot Poker
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 3' x 1'
  • Native to: South Africa

A striking accent in the xeric garden, Red Hot Poker is well named for it vivid orange and red bottle brush flowers. Lily-like leaves at the bottom are evergreen.

Koeleria macrantha
  • Common name: Prairie Junegrass
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 2' x 1'
  • Native to: Idaho

Prairie Junegrass is a native, perennial, cool season tufted bunch grass , growing  actively when soil temps are cooler in spring and fall. It produces lustrous silver-green seedheads in early summer. The supporting foliage is an attractive green-gray color. June Grass prefers full sun and dry, sandy soil.

Lavandula angustifolia ‘Munstead’
  • Common name: Munstead Lavender
  • Zone: 5
  • Exposure: Sun or Part Shade
  • Height x Width: 18" x 18"
  • Native to: Mediterranean

This is a classic mid-sized Lavender. Spikes of fragrant lavender flowers in early summer.

Lavandula x intermedia ‘Grosso’
  • Common name: Lavender “Grosso”
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 3 ft. x 3 ft.
  • Native to: Mediterranean

Lavender “Grosso” is a vigorous, large lavender with long, deep purple flower spikes in early to mid-summer. Extremely drought- tolerant, good foundation planting.Flower spikes may be cut back for repeat bloom. Evergreen foliage. Pollinators: bees.

 

Liatris aspera
  • Common name: Button Blazing Star
  • Zone: 3
  • Exposure: Sun or Part Shade
  • Height x Width: 2-3’ x 1’
  • Native to: Central, Eastern U.S.

Attractive to many native insects, including butterflies, hummingbirds and more.

Liatris ligulistylis
  • Common name: Rocky Mountain Blazing Star
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 2-3’ x 1’
  • Native to: Montana to New Mexico

Rocky Mountain Blazing Star produces tall upright stalks of lavender/purple flowers that are premium butterfly attractors. This prairie native is a robust grower and does best in fertile soils with infrequent but deep soakings. Nectar plant for Monarch and other butterflies. Excellent cut flower.

Liatris mucronata
  • Common name: Bottle Brush Blazing Star
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 24” x 18”
  • Native to: South Central US

Dense spikes of lavender-pink flowers on tall, thick stems. Great pollinator plant. Prefers dry, sandy soil.

 

 

 

Liatris punctata
  • Common name: Dotted Gayfeather
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 12-18 in. x 8-12 in.
  • Native to: Short Grass Prairie, Central US

A showy plant for dry gardens or shortgrass meadows, Dotted Gayfeather produces lavender bottlebrushes that bloom from the top down. Deep tuberous taproots account for extreme drought tolerance and long life. Nectar plant for butterflies.

 

Liatris spicata
  • Common name: Dense Blazing Star
  • Zone: 3
  • Exposure: Sun
  • Height x Width: 16 in. x 12-24 in.
  • Native to: Great Plains (US)

Dense Blazing Star: With showy spikes of pink flowers over grass-like foliage, this native prairie plant will add stunning variety, texture & beauty to your border or meadow. Excellent cut flower. Nectar plant for butterflies.

 

Monardella odoratissima
  • Common name: Mountain Beebalm, Little Beebalm, Coyote Mint
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 12 in. x 12 in.
  • Native to: Idaho

Mountain Beebalm or Little Beebalm or Coyote Mint has violet flowers in dense heads in mid-summer over compact clumps of deliciously pungent minty leaves. Great butterfly plant.

Muhlenbergia lindheimeri
  • Common name: Lindheimer's Muhly
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 2-5’x 2-5’
  • Native to: TX

Silvery seedheads on SW native grass. Fine foliage, fountain-like form. Needs good drainage.

Oenothera macrocarpa ssp. fremontii
  • Common name: Fremont's Evening Primrose
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 12 in. x 24 in.
  • Native to: Central US

Fremont’s Evening Primrose gives a dazzling display of lemon-yellow flowers in mid-summer. Blooms are tucked in and around the narrow gray- green foliage. Deeply tap-rooted and long-lived. Needs good drainage.

 

Oenothera pallida
  • Common name: Pale Evening Primrose
  • Zone: 3-4
  • Exposure: Sun
  • Height x Width: 12" x 12"
  • Native to: Idaho

This Boise Foothills native produces scads of lovely white flowers and, given a little extra water, can bloom all summer. The plants spread by root and could be invasive in the wrong situation. Needs no water once established.

Penstemon barbatus
  • Common name: Beardlip Penstemon
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 3' x 2'
  • Native to: SW US

Loose spikes of brilliant scarlet tubular flowers with distinctive ‘bearded’ lip. Tough and long-lived. Great hummingbird attractor.

Penstemon utahensis
  • Common name: Utah Penstemon
  • Zone: 4
  • Exposure: Sun
  • Height x Width: 16" x 12"
  • Native to: Utah, NV, CO, AZ

Stunningly beautiful red-pink flowers on long stalks.

Sedum grisebachii
  • Common name: Grisebach's Sedum
  • Zone: 5
  • Exposure: Sun
  • Height x Width: 2" and spreading
  • Native to: Mediterranean

This unusual sedum, with tiny leaves packed on short stems, has a bristly appearance and contrasts nicely with other sedums. Great for rock gardens, edging, pathways. Evergreen.

Solidago canadensis
  • Common name: Canada Goldenrod
  • Zone: 3
  • Exposure: Sun/part shade
  • Height x Width: 2' x 2'
  • Native to: Idaho

This widespread native is an excellent pollinator plant, as well as being extremely drought tolerant once established. Its only drawback is that it spreads by root and can be quite aggressive in a well-watered garden.