Perennials

Many of the best and longest flowering plants are perennials such as Zagreb Coreopsis, Pinchusion Sunflower, and Carnations. Many species produce flowers at times when annuals are not in bloom, such as in very early spring or late into the fall, extending the nectar and pollen supply for insects. Perennials are non-woody plants from accross the plant kingdom that typically die back to the ground in the winter and then come back from roots or tubers the following spring, but some species remain evergreen through the winter. There are also species that only appear above ground for short periods of time, such as Bleeding Hearts that grow and bloom in the spring and then die back once the soil dries up in the early summer. The leafy period of these species can usually be extended when plants are irrigated.

Western Horsemint Hyssop Agastache urticifolia Mature Height: 3ft Hardiness Zones: 5-9 Spread: forms a multi-stem clump Aspect: partial shade to full sun Foliage: deciduous Flowering: June, July Water: average to dry Starting at $8.50 Western Goldenrod Solidago lepida Mature Height: 5ft Hardiness Zones: 4-9 Spread: spreads quickly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to dry Starting at $4.50 Idaho Gumweed Grindelia nana Mature Height: 2ft Hardiness Zones: 7-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: dry to xeric Starting at $10.00 West Coast Goldenrod Solidago elongata Mature Height: 3ft Hardiness Zones: 5-8 Spread: spreads quickly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: July, August Water: riparian to xeric Starting at $4.50 Perennial Beardstongue Penstemon hartwegii Mature Height: 3ft Hardiness Zones: 6-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: evergreen Flowering: June, July, August, September, October Water: dry Out of season. White Daisy Aster Aster novi-belgii White Mature Height: 2ft Hardiness Zones: 3-9 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Perennial Clumping Sunflower Helianthus multiflorus Bouquet Wonder Mature Height: 4ft Hardiness Zones: 4-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: August, September Water: riparian to average Out of season. Pacific Bleeding Heart Dicentra formosa Mature Height: 1ft Hardiness Zones: 6-8 Spread: spreads slowly by the roots Aspect: partial shade to partial shade Foliage: deciduous Flowering: May Water: average to dry Sold out. Narrowleaf Milkweed Asclepias fascicularis Mature Height: 3ft Hardiness Zones: 7-9 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: July, August Water: riparian to xeric Sold out but likely back soon. Tall Verbena Verbena bonariensis Mature Height: 4ft Hardiness Zones: 7-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: June, July, August, September Water: average to dry Sold out but likely back soon. Rose Checkermallow Sidalcea virgata Mature Height: 2ft Hardiness Zones: 5-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: April, May, June Water: average to xeric Sold out but likely back soon. Western Red Columbine Aquilegia formosa Mature Height: 2ft Hardiness Zones: 3-9 Spread: forms a multi-stem clump Aspect: partial shade to mostly sun Foliage: deciduous Flowering: May, June, July Water: average to dry Sold out but likely back soon. Cascade Beardtongue Penstemon serrulatus Mature Height: 2ft Hardiness Zones: 3-9 Spread: forms a multi-stem clump Aspect: mostly sun to mostly sun Foliage: deciduous Flowering: June Water: average to dry Out of season. Pearly Everlasting Anaphalis margaritacea Mature Height: 2ft Hardiness Zones: 2-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: June, July Water: average to dry Sold out. Corn Lily Veratrum californicum Mature Height: 6ft Hardiness Zones: 5-8 Foliage: deciduous Out of season. Yellow Lenton Rose Helleborus x Sunshine Ruffles Mature Height: 2ft Hardiness Zones: 4-9 Foliage: evergreen Out of season. Rose Meadowsweet Spiraea splendens Mature Height: 3ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: partial shade to full sun Foliage: deciduous Flowering: June Water: riparian to average Out of season. Wild Bergamot Monarda fistulosa Mature Height: 3ft Hardiness Zones: 3-9 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: June, July, August Water: average to dry Out of season. Fireweed Chamaenerion angustifolium Mature Height: 5ft Hardiness Zones: 3-8 Spread: spreads quickly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: July, August Water: riparian to dry Sold out but likely back soon. Rough Hedgenettle Stachys rigida Mature Height: 2ft Hardiness Zones: 6-8 Spread: spreads moderately by the roots Aspect: mostly shade to mostly sun Foliage: deciduous Flowering: June, July Water: riparian to average Sold out but likely back soon. Waxy California Coneflower Rudbeckia californica glauca Mature Height: 3ft Hardiness Zones: 6-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Water: riparian to average Sold out. Pacific Hounds Tongue Adelinia grandis Mature Height: 3ft Hardiness Zones: 7-9 Out of season. Narrowleaf Mule's Ear Wyethia angustifolia Mature Height: 3ft Hardiness Zones: 6-8 Out of season. Balsamroot Sunflower Balsamorhiza deltoidea Mature Height: 2ft Hardiness Zones: 6-8 Out of season. Showy Fleabane Aster Erigeron speciosus Mature Height: 2ft Hardiness Zones: 6-8 Out of season. Daisy Aster Aster novi-belgii Anneke Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Sold out but likely back soon. Ornamental Oregano Origanum Kent Beauty Mature Height: 1ft Hardiness Zones: 6-8 Foliage: deciduous Out of season. Daisy Aster Aster novi-belgii Zwergenhimmel Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Sold out but likely back soon. Daisy Aster Aster novi-belgii Believer Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Veronica 'Georgia Blue' Mature Height: 1ft Hardiness Zones: 4-8 Foliage: deciduous Out of season. Yellow Columbine Aquilegia sp. Mature Height: 3ft Hardiness Zones: 4-8 Spread: forms a multi-stem clump Aspect: partial shade to full sun Foliage: deciduous Flowering: May, June Water: average to dry Sold out but likely back soon. Golden Box Honeysuckle Lonicera nitida 'Lemon Beauty' Mature Height: 4ft Hardiness Zones: 7-8 Foliage: evergreen Out of season. Daisy Aster Aster novi-belgii Purple Bunches Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Daisy Aster Aster novi-belgii Marjorie Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Russian Comfrey Symphytum uplandicum Bocking 14 Mature Height: 3ft Hardiness Zones: 4-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: May, August Water: average to dry Sold out but likely back soon. Hardy Pink Begonia Begonia grandis 'Heron's Pirouette' Mature Height: 2ft Hardiness Zones: 6-8 Foliage: deciduous Not in production this year. Blue Variegated Hosta Hosta 'Ivory Queen' Mature Height: 2ft Hardiness Zones: 5-8 Foliage: deciduous Out of season. Daylily Hemerocallis Stella de Oro Mature Height: 2ft Hardiness Zones: 3-8 Foliage: deciduous Out of season. Jerusalem Artichoke Helianthus tuberosus Mature Height: 8ft Hardiness Zones: 4-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: September, October Water: average to dry Out of season. Fall Wind Flower Anemone hupehensis Prince Henry Mature Height: 2ft Hardiness Zones: 5-8 Spread: spreading Aspect: partial shade to mostly sun Foliage: deciduous Flowering: September Water: average Sold out but likely back soon. Perennial Threadleaf Tickseed Coreopsis verticillata Zagreb Mature Height: 2ft Hardiness Zones: 3-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: June, July, August, September Water: average to dry Sold out. Daisy Aster Aster novi-belgii Blue Lagoon Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Yellow Margin Plantain Hosta sp. Fragrant Fire Mature Height: 2ft Hardiness Zones: 3-9 Foliage: deciduous Out of season. Red Yarrow Achillea millefolium 'Red Velvet' Mature Height: 2ft Hardiness Zones: 4-8 Foliage: deciduous Sold out but likely back soon. Daylily Hemerocallis Orange Dream Mature Height: 2ft Hardiness Zones: 3-8 Foliage: deciduous Out of season. Daisy Aster Aster novi-belgii Violet Carpet Mature Height: 1ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Not in production this year. Bear Grass Xerophyllum tenax Mature Height: 3ft Hardiness Zones: 5-8 Foliage: evergreen Out of season. Perennial Maximilian Sunflower Helianthus maximiliani Mature Height: 7ft Hardiness Zones: 4-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: August, September Water: riparian to dry Out of season. English Thyme Thymus vulgaris Mature Height: 1ft Hardiness Zones: 5-8 Foliage: evergreen Out of season. Blue Balloon Flower Platycodon grandiflorus Sentimental Mature Height: 1ft Hardiness Zones: 3-8 Foliage: evergreen Out of season. Male Fern Dryopteris filix-mas Mature Height: 4ft Hardiness Zones: 4-8 Spread: forms a multi-stem clump Aspect: deep shade to partial shade Foliage: deciduous Water: riparian to average Not in production this year. Douglas Aster Symphyotrichum subspicatum Mature Height: 3ft Hardiness Zones: 5-8 Spread: spreads quickly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to dry Sold out but likely back soon. Coral Bells Heuchera americana Dales Strain Mature Height: 3ft Hardiness Zones: 4-8 Foliage: evergreen Out of season. Chinese Fairy Bells Disporum cantoniense 'Night Heron' Mature Height: 5ft Hardiness Zones: 6-8 Spread: forms a multi-stem clump Aspect: partial shade to mostly sun Foliage: deciduous Water: average Not in production this year. Pincushion Perennial Sunflower Helianthus multiflorus Sunshine Daydream Mature Height: 5ft Hardiness Zones: 4-8 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: August, September Water: riparian to average Out of season. Red Daisy Aster Aster novi-belgii Crimson Brocade Mature Height: 2ft Hardiness Zones: 4-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: deciduous Flowering: September Water: riparian to average Sold out but likely back soon. White Bleeding Heart Dicentra spectabilis alba Mature Height: 1ft Hardiness Zones: 3-8 Spread: spreads slowly by the roots Aspect: partial shade to mostly sun Foliage: deciduous Flowering: June Water: average to xeric Out of season. Giant Japanese Windflower Anemone Honorine Jobert Mature Height: 4ft Hardiness Zones: 5-8 Spread: spreading Aspect: partial shade to mostly sun Foliage: deciduous Flowering: September Water: average to dry Not in production this year. Double Flowering Hellebore Helleborus 'Ballerina Ruffles' Mature Height: 2ft Hardiness Zones: 4-8 Foliage: evergreen Out of season. Bleeding Heart Dicentra spectabilis Mature Height: 1ft Hardiness Zones: 3-8 Spread: spreads slowly by the roots Aspect: partial shade to mostly sun Foliage: deciduous Flowering: June Water: average to xeric Out of season. Shasta Daisy Leucanthemum x superbum Mature Height: 3ft Hardiness Zones: 5-8 Spread: forms a multi-stem clump Aspect: partial shade to full sun Foliage: evergreen Flowering: June Water: average to dry Out of season. Christmas Lenten Rose Helleborus orientalis 'White Spotted Lady' Mature Height: 1ft Hardiness Zones: 5-8 Foliage: evergreen Out of season. Yellow Blooming Yarrow Achillea 'Moonshine' Mature Height: 2ft Hardiness Zones: 3-8 Foliage: deciduous Sold out. Red Tall Phlox Phlox paniculata Tenor Mature Height: 2ft Hardiness Zones: 4-8 Foliage: deciduous Out of season. Fall Sunflower Helianthus angustifolius Mature Height: 5ft Hardiness Zones: 6-9 Spread: forms a multi-stem clump Aspect: mostly sun to full sun Foliage: deciduous Flowering: October, November Water: riparian to average Out of season. Tall Phlox Phlox x Blue Boy Mature Height: 2ft Hardiness Zones: 4-8 Foliage: evergreen Out of season. Bears Breeches Acanthus mollis Mature Height: 3ft Hardiness Zones: 7-8 Foliage: deciduous Sold out. White Bell Flower Campanula 'Moon' Mature Height: 2ft Hardiness Zones: 6-8 Spread: spreads slowly by the roots Aspect: mostly sun to full sun Foliage: evergreen Flowering: July Water: average to dry Sold out. Pink Carnation Dianthus Firewitch Mature Height: 1ft Hardiness Zones: 3-8 Spread: forms a multi-stem clump Aspect: partial shade to full sun Foliage: evergreen Flowering: June Water: average Not in production this year. Plantain Hosta Hyacinthina Mature Height: 2ft Hardiness Zones: 3-8 Foliage: deciduous Out of season. Adams Needle Yucca filamentosa Mature Height: 3ft Hardiness Zones: 4-11 Foliage: evergreen Out of season.