Classic, slow-growing Mediterranean evergreen tree with willow-like foliage that can be grown as a standard or multi-trunk. Trunks of younger trees are generally smooth and become more gnarled as they age. Pollen is highly allergenic to many people, and fruit and seeds can be messy and even invasive. Seeds can be spread by birds and mammals and have become invasive in parts of southern California and the Central Valley. Low-flowering and non-fruiting cultivars are available.

Examples: O. e. ‘Bonita’ (25-30’ x 25-30’) is nearly fruitless; O. e. ‘Franz Fruitless’ (25-30’ x 25-30’) produces no pollen and nearly no fruit; O. e. ‘Little Ollie’ (6-8’ x 6-8’) is a dwarf non-fruiting hybrid with dense foliage; O. e. ‘Majestic Beauty’ (25’ x 20’) only develops small amounts of fruit; O. e. ‘Swan Hill’ (25-30’ x 25-30’) is a non-fruiting olive free of airborne pollen.

• Water: Very Low
• Light: Full SunPartial Shade
• Soil: Well Drained

Classic, aromatic, small, Mediterranean evergreen shrub that works well in a mass or mixed planting in a sunny location with good drainage. Blue-to-purple flowers are attractive to bees and butterflies, and seeds provide food to birds. Shear plants by one-third to one-half after flowering to maintain a neat appearance. Vulnerable to root rot in damp locations or if organic mulch is too close to plant crown.

Examples: English lavender (L. angustifolia, 1-2’ x 2-3’) and many cultivars, French Lavender (L. dentata, 3-4’ x 4-6’), hedge lavender (L. x intermedia, 1-2’ x 2-3’), Spanish lavender (L. stoechas, 2-3’ x 2-3’) featuring large and showy bracts on top of flower spikes.

• Water: Low
• Light: Full Sun
• Soil: Well Drained

Salvias are a huge group of more than 900 species that include annuals, perennials, and shrubs adapted to a variety of climates and have varying water requirements. Salvias are attractive to hummingbirds, butterflies, and bees, and are generally ignored by deer. Sages that are native to California are generally drought-tolerant, prefer full sun, and little to no fertilizer. Annual pruning in late summer or fall generally helps to keep plants tidy and healthy.

CA native sages:

• S. apiana, white sage (3-4’ x 4-6’), silvery-white, aromatic leaves with tall flower spikes of white flowers, popular for honey production and in bundles as a natural incense.
• ‘Bee’s Bliss’ (1-2’ x 6-8’), superb, light gray groundcover with light purple flowers on long spikes; damp conditions can cause mildew which will clear with warm weather and sunny conditions.
• S. clevelandii, Cleveland sage (3-5’ x 3-5’), medium-sized shrub for hot, dry locations known for pleasant fragrance and deep blue whorls of flowers; popular cultivars include S. c. ‘Allen Chickering’, S. c. ‘Pozo Blue’, and S. c. ‘Winnifred Gilman’.
• S. leucophylla, purple sage, includes plants with both an upright growth habit, such as S. l. ‘Amethyst Bluff’ (3-5’ x 3-5’) and others with a sprawling form, such as S. l. ‘Point Sal’ (2-3’ x 6’), both of which are from Santa Barbara county.
• S. sonomaensis, Sonoma sage (1-2’ x 3-4’), groundcover that prefers light shade and will not tolerate damp conditions; cultivars include S. s. ‘Dara’s Choice’, S. s. ‘Greenberg Gray’, and S. s. ‘Hobbit Toes’.
• S. spathacaea, hummingbird sage (1-2’ spreading), herbaceous groundcover that grows well in dry shade and spreads slowly by underground rhizomes; large leaves have a wonderful fruity fragrance; the only red-flowered native sage.
• S. mellifera, black sage (6′ x 10′), evergreen shrub that grows well in full sun and well drained soils. Dark green leaves with pale purple flowers in late spring and early summer.

Non-native sages:

• S. chamaedryoides, germander sage (2-3’)
• S. chiapensis, Chiapas sage (1-2’ x 3-4’)
• S. greggii, autumn sage (1-4’ x 1-4’)
• S. leucantha, Mexican bush sage (3-4’ x 3-6’)
• S. microphylla, cherry sage (3-4’ x 3-6’)
• S. officinalis, garden sage (1-3’ x 1-3’)

• Water: Very LowLowModerate
• Light: Full SunPartial Shade
• Soil: Well Drained

Ceanothus is a group of fast-growing, evergreen shrubs that vary from groundcovers to small trees, many of which are native to California. They provide a spectacular display of flowers in spring that will attract a multitude of pollinators. Flowers are followed by seeds that provide food for birds. The clusters of tiny flowers range from white to deep violet. Plants perform best with good drainage and minimal irrigation once established. Some do best in cooler coastal climates, but many thrive in hotter inland climates. Pay close attention to the mature size when selecting ceanothus to ensure that it has sufficient space for its natural form.

Groundcovers: C. ‘Centennial’ (1’ x 8’), C. gloriosus var. gloriosus ‘Anchor Bay’ (2’ x 8’), C. griseus var. horizontalis ‘Diamond Heights’ (variegated, 1’ x 4’), C. griseus var. horizontalis ‘Yankee Point’ (3’ x 12’), C. maritimus (2’ x 6’).

Shrubs: C. ‘Blue Jeans’ (6’ x 6’), C. Concha (6’ x 6’), C. ‘Dark Star’ (6’ x 8’), C. ‘Joyce Coulter’ (4’ x 12’), C. ‘Julia Phelps’ (8’ x 10’), C. cuneatus (8’ x 8’), C. thyrsiflorus ‘Skylark’ (4’ x 6’).

Large shrubs: C. ‘Frosty Blue’ (10’ x 12’), C. thyrsiflorus (20’ x 20’), C. t. ‘Snow Flurry’ (white flower, 20’ x 20’).

Trees: C. ‘Ray Hartman’ (15′ x 15′)

• Water: Very LowLow
• Light: Full SunPartial Shade
• Soil: Well Drained

Yarrows are variable low-growing, spreading herbaceous perennials with finely divided leaves that inhabit many temperate regions in the Northern Hemisphere. Flattish clusters of flowers form in spring and well into summer and provide an important nectar source for pollinators and insects. Yarrow can help to stabilize slopes and is a good addition to the upper level of rain gardens and swales. Colors include yellow, pink, and red.

California native spp & cvs: A. millefolium (common yarrow), A. m. ‘Calistoga’, A. m. ‘Island Pink’, A. m. ‘Sonoma Coast’, A. m. ‘Terracotta’.

Other yarrows: A. filipendulina (fern leaf yarrow), A. f. ‘Coronation Gold’, A. ‘Moonshine’, A. tomentosa (woolly yarrow).

• Water: Low
• Light: Full SunPartial Shade
• Soil: Most Soils

Large group of mostly cool-season, perennial, bunching or spreading grasses. Bunch grass varieties can be used as a no-mow lawn replacement, help to stabilize slopes, and have ornamental value. Festuca californica (California fescue, 1-2’ wide x 2’) prefers part shade and works wonderfully massed under the dry shade of native oaks. Festuca glauca (blue fescue, 1’ x 1’) is a small, clumping grass with bluish gray-green leaves. Festuca idahoenis (Idaho fescue, 1-2’ wide x 1’) also has bluish gray-green leaves and is more drought-tolerant and longer lived than blue fescue. Festuca rubra (red fescue) grows from rhizomes and has long, fine-textured leaves that lay over to form a pleasing drift effect as a no-mow lawn.

• Water: Very LowLow
• Light: Full SunPartial Shade
• Soil: Well Drained

Crape myrtle has become a ubiquitous street tree due to its attractive bark, fall color, and flowers all helping to provide year-round interest, as well as being of manageable size and tending not to lift sidewalks with its roots. The most commonly available crape myrtles are Lagerstroemia indica and many hybrids and their shrub forms, which may be less prone to mildew than the species. Flowers occur in late summer in white, pinks, and reddish purple. Crape myrtles are naturally multi-trunked, and plants grown as standards with a single trunk have a tendency to grow suckers that should be removed.

• Water: Low
• Light: Full Sun
• Soil: Most Soils

Large group of evergreen and deciduous shrubs and trees that includes many ornamental species as well as others that produce edible fruit.

Examples:

• Apricot, nectarine, peach, and plum trees are all classified as having low-water use in Sonoma and Marin counties. Consult local nurseries for available types and specific growing requirements.
• Carolina laurel cherry (P. caroliniana, 20-30’ x 15-20’) is an upright, evergreen shrub from North Carolina to Texas where it grows as an understory plant. Its small, white flowers in spring are followed by small black fruit. P. c. ‘Compacta’ (10-15’ x 6-8’) is a popular smaller form.
• Hollyleaf cherry (P. ilicifolia, 10-25’ x 10-25’) is an evergreen shrub from central California to Baja California. Creamy white flowers in narrow spikes in late spring to early summer are followed by fruits that attract many species of birds. Can be used as a hedge or screen, as well as for erosion control.
• Catalina cherry (P. ilicifolia spp. Lyonii, 30-45’ x 20-30’) is native to the Channel Islands.

• Water: Low
• Light: Full Sun
• Soil: Well Drained

Dependable, evergreen shrubs that can provide an effective screen or background plant. While most require moderate amounts of water in Sonoma and Marin counties, mock orange (P. tobira, 6-15’ x 6-15’) from Japan is perhaps the most drought-tolerant. Mock orange has a mounding form with whorls of oval leaves. Available in several sizes and with variegated leaves.

Examples: P. t. ‘Creme de Mint’ (2-3’ x 2-3’) is a compact form with white margined leaves; P. t. ‘Variegata’ (5-10’ x 5-10’) is a larger form with variegated leaves; and P. t. ‘Wheeler’s Dwarf’ (3-4’ x 4-6’) is a low-growing groundcover form.

• Water: Low
• Light: Full SunPartial Shade
• Soil: Well Drained

Attractive, Chinese evergreen shrub with gently drooping branches and unusual flowers with thread-like petals in the spring. Commonly available either with green leaves and white flowers, or purple leaves and pink flowers. Well suited to understory locations with partial shade in hotter locations. Grows naturally as a shrub but may be available as a standard or espalier.

• Water: Low
• Light: Full SunPartial Shade
• Soil: Loam

Diverse group of flowering, evergreen shrubs and perennials and annuals found throughout the western United States. Most available in nurseries are native to California and generally prefer drier sites. Flowers colors include yellow, white, pink, and red and are held above foliage in umbels that dry over time and are popular in flower arrangements. Buckwheats provide pollen and nectar for bees and butterflies, larval food for butterflies, seeds for birds, and cover for many creatures.

Examples:

• Santa Cruz Island buckwheat (E. arborescens, 3-4’ x 4-5’) densely mounded with white flowers.
• Saffron buckwheat (E. crocatum, 1-2’ x 2-3’) with chartreuse-yellow flowers and pale leaves.
• California buckwheat (E. fasciculatum, 2-3’ x 3’) and its low-growing cultivars such as E. f. ‘Warriner Lytle.’
• Catherine’s lace (E. giganteum, 4-8’ x 6-10’) with delicate, white flowers and soft pale leaves.
• Red-flowered buckwheat (E. grande var. Rubescens, 1-2’ x 2-3’) low-mounding perennial with rose-pink flowers, coastal bluff buckwheat (E. latifolium, up to 12” x 1-2’.)
• Sulfur buckwheat (E. umbellatum, 6-18” x 1-3’) with intense yellow flowers and cultivars E. u. var. aureum ‘Kannah Creek’ and E. u. Var. ‘Shasta Sulphur’.

• Water: Very LowLow
• Light: Full SunPartial Shade
• Soil: Well Drained

Fast-growing perennials that thrive in hot locations and produce clusters of small, showy flowers in summer.

Examples:

• V. bonariensis (3-6’ x 2-3’) is an upright perennial from South America with long, airy flower stalks. Reseeds readily and should not be planted near riparian areas where it can be invasive.
• Garden verbena (V. x hybrida, 6-12” x 2-3’) is a popular and showy groundcover available in many colors.
• Cedros Island verbena (V. lilacina ‘De La Mina’, 1-2’ x 2-3’) from the Cedros Island off the coast of Baja California is a popular native for its deep purple flower color and uniform growth habit.

• Water: Very LowLow
• Light: Full Sun
• Soil: Well Drained

The orange, tubular flowers of sticky monkey flower can be enjoyed in many locations throughout Sonoma and Marin counties in spring and summer, a testament to how well this plant is adapted to hot and dry conditions. The slightly sticky leaves benefit from light pinching and pruning to maintain an attractive appearance and support for the beautiful flowers. Many hybrids provide color variation. Do not confuse this plant with the red-flowered scarlet monkey flower (Mimulus cardinalis), an herbaceous riparian plant that requires regular water to thrive.

• Water: Very Low
• Light: Full SunPartial Shade
• Soil: Sandy

Penstemons are a large group of woody or herbaceous perennials with narrow leaves and tubular flowers. Foothill penstemon is a widely known and grown California native with iridescent purple-blue flowers during spring and early summer that are attractive to hummingbirds. The cultivar known as ‘Margarita BOP’ is widely available, reliable, and garden- tolerant. Remove spent flower spikes to encourage more flowers.

• Water: Low
• Light: Full SunPartial Shade
• Soil: Well Drained

Colony-forming, herbaceous perennials with several species providing important habitat and larval food sources for the monarch butterfly while attracting a diverse array of insects.

California milkweeds remain dormant during the colder months. Stems that emerge in April or May bear clusters of small, star-like flowers in summer followed by silky-tailed seeds that are dispersed by wind. A. fascicularis (narrow-leaved milkweed, 1-3’) is the preferred food source for monarch larvae. A. speciosa (showy milkweed, 2-4’) has larger, soft foliage, showier flower clusters, and is also a food source for monarch larvae. A. cordifolia (heart leaf milkweed, 1-2′) has heart-shaped leaves and is also a food source for monarch larvae.

• Water: Low
• Light: Full SunPartial Shade
• Soil: Most Soils

North American native, warm-season bunchgrass with narrow, grayish green leaves. Ornamental flowers like small brushes form at right angles to slender stems during the summer and persist for many months. Blue grama is adapted to heat, drought, cold, and foot traffic. It does not thrive in shade or wet soils. Blue grama can be used in small clumps among other plants, in a mass as part of a meadow, or even as a lawn substitute. B. g. ‘Blonde Ambition’ is a popular and robust cultivar.

• Water: Low
• Light: Full Sun
• Soil: Well Drained