Bloom winter through early spring (February through April
Vine maple (Acer circinatum): Native, deciduous large shrub or small tree that can be trained to a single or multi-trunked form. Good as an understory plant under tall evergreens. Zone 7.
Tall Oregon grape (Berberis aquifolium, formerly Mahonia): The Oregon State flower, this native evergreen shrub busts out with huge can’t-miss-them clusters of yellow flowers. Zone 7.
Camas (Camassia spp.): A native bulb with tall foliage and an even taller stalk of blue flowers.
Crabapple (Malus floribunda): Deciduous tree with masses of pink or white blooms, followed by red berries. Zone 4.
Willow (Salix spp.): Many different types of this deciduous shrub or tree, depending on which you choose. Some have a graceful weeping form. Zone 6.
Bloom spring through early summer (April through June)
Western serviceberry (Amelanchier alnifolia spp.): Native deciduous shrub or small tree with star-shaped white flowers followed by maroon-purple berries. Zone 4.
Borage (Borago officinalis): An annual herb with fuzzy foliage and delightful clusters of blue flowers; will reseed year to year. An ancient plant that is used for medicinal purposes.
California lilac (Ceanothus spp.): Tough evergreen shrub with knobs of blue flowers that cover the plant like a blanket. Drought tolerant. There are many cultivars. Zone 7-8.
Tickseed (Coreopsis spp.): An adaptable perennial prized for its bright yellow flowers, often with a red eye, and drought tolerance. Various zones.
Geranium (Geramium spp.): These perennials are not the blustery blooming annual plants that we’re all familiar with; they are tough, hardy perennials with five-petaled flowers in many shades of purple and pink. Zone 3.
Globe gilia (Gilia capitata): A native annual that’s very adaptable to different situations. Sports puffs of lavender flowers. May reseed.
Lupine (Lupinus spp.): Tall spikes of flowers make this perennial a distinctive plant in the garden. The most common is blue, but hybrids run the gamut from pink and red yellow and white and even bi-colors. Zone 3.
Chokecherry (Prunus virginiana): A native deciduous shrub or small tree with pendulous white flowers and attractive bark. Zone 2.
Bloom mid- to late summer (July through September)
Blue giant hyssop (Agastache foeniculum and spp.) A sturdy perennial with rods of lavender-blue flowers. Smells like anise when crushed. Zone 4.
California poppy (Eschscholzia californica): The familiar, friendly orange perennial wildflower that’s as tough as it comes. Drought tolerant. Zone 5.
Oregon gumweed (Grindelia stricta or integrifolia): A native plant bearing school-bus yellow, daisylike flowers. Great for the beach. Zone 8.
Sneezeweed (Helenium autumnale): Another native, yellow-blooming perennial with daisylike flowers and a big cone in the center. Zone 3.
Showy tarweed (Madia elegans): This yellow-blooming native plant is an annual herb, and a beautiful one at that. Flowers are centered with a red ring.
Catmint (Nepeta x faassenii): A pretty, pest-free perennial with gray-green, fragrant foliage and spikes of small flowers in shades of blue and purple. Zone 5.
Russian sage (Perovskia atriplicifolia): Airy clouds of lavender flowers distinguish this heat-loving, low-water perennial. Zone 4.
Phacelia (Phacelia spp.): A fast-growing perennial with fernlike foliage topped with fascinating blue flowers that unfurl in a fiddlehead shape. Zone 7.
Stonecrop (Sedum spp.): There are any species of this succulent, both tall and low. Groundcovers normally put out small yellow flowers; tall have blooms in shades of pink. Drought tolerant. Various hardiness, some as low as Zone 4.
Bloom late summer to fall (September through November)
Michaelmas daisy (Aster amellus): An easy-to-grow perennial with daisylike flowers in various shades of purple and pink. There’s even a white one. Zone 4.
Goldenrod (Solidago canadensis): A native perennial with abundant sprays of sunshine yellow. Zone 4.
Douglas aster (Symphyotrichum subspicatum): An adaptable, very-long bl