Prunus ilicifolia ssp. ilicifolia
Hollyleaf cherry is a large, evergreen shrub that can grow more than 15 feet tall and wide, but is easily pruned to be more compact. This adaptable foothill native can be clipped into a formal hedge, pruned to be treelike, or left to its own natural gumdrop-shaped habit. Often it is used for background or screen plantings. Glossy, holly-like leaves are accompanied by showy displays of creamy-white flowers in narrow spikes from late spring to early summer. Plant in full sun to very light shade. Looks best with occasional deep waterings, but can tolerate very dry conditions once established. Although it requires good drainage, it is tolerant of heat, drought, wind and oak root fungus. An excellent habitat plant, offering food and cover for wildlife. Birds enjoy the small reddish-purple cherries. Generally deer resistant.
Prunus ilicifolia ssp. lyonii
This subspecies of our native cherry comes from Southern California and can be grown as a large shrub or trained into a small tree. The Catalina cherry is evergreen, with soft, glossy leaves and without the toothed leaf margin of our more local hollyleaf cherry. Gorgeous, creamy-white flower clusters make a showy display in spring. The purple-red fruits are edible, but are mostly preferred by wildlife. At 20-40 feet in height and slightly narrower in width, it is also larger than the hollyleaf cherry, but is prunable to 8-10 feet. Its dense foliage makes an excellent hedge. Does best in well-drained soil with occasional deep watering once established. The flowers are adored by pollinators. Robins, finches, towhees, Cedar waxwings and mockingbirds eat the cherries.
Prunus virginiana v. demissa
Large, deciduous shrub or small tree with red-purple bark and dark green foliage. Growing 8 foot or more tall and spreading slowly to form a thicket. Striking racemes of fragrant white flowers in the spring followed by dark red fruits which can be sweet but astringent. Foliage can take on nice fall color before dropping its leaves. Fabulous habitat plant drawing bees, butterflies and other pollinators to its flowers. Birds, especially bluebirds, adore the fruits and are known to swoop in and finish them off quickly. Where summers are hot, light or part shade is best, with regular to occasional water once established. They often grow where there is seasonal moisture in the spring, but somewhat dry as the season progresses.
Ptelea crenulata
This interesting California endemic deserves wider use in California gardens. Hoptree is a deciduous, large shrub/small tree, growing 6 - 15 ft. tall, in the citrus family. Native to hot, interior coast ranges and the Sierra Nevada foothills, often growing in canyons where residual moisture can be found. Glossy, green, fragrant, trifoliate leaves with panicles of small creamy-white flowers decorate the branch tips in spring. Handsome, circular, flattened, fruits which look like hop seeds, start out green and age to tan and may hold on after the leaves have fallen in the autumn. Plant in full sun to light shade with occasional, deep summer watering. The fragrant flowers are attractive to a variety of pollinators including butterflies. A larval host for the two-tailed swallowtail butterfly.
Quercus agrifolia
A beautiful and stately evergreen oak, native to many plant communities from Mendocino County south to Baja. One of the fastest growing California oaks and a versatile landscape subject as long as space allows. Young trees have a dense rounded canopy covered with thick, dark green, oval and convex leaves with spiny margins. Smooth gray bark becomes furrowed with age. Flowers are produced on short yellow hanging catkins followed by long tapered acorns. In time, develops a magnificent architecture with broad spreading branches. Planting native oaks provides beauty, shade, food and cover to a dazzling array of wildlife. Plant in sun to light shade. No additional summer water required once established.
Quercus chrysolepis
A handsome evergreen oak with a rounded, spreading crown, 20 - 60 ft tall and wide. The leaves of its broad, low canopy are dark-green and shiny with fuzzy gold or silver hairs on the underside. Native from Oregon to Baja, it is the most widely distributed oak in California. Often grows near creeks, but requires only occasional water. Plant in full sun to light shade where it will be drought tolerant once established. A good choice for bank stabilization. Like other oaks, it is habitat powerhouse, offering food and cover for a huge variety of wildlife.
Quercus lobata
This majestic oak once covered the Santa Rosa Valley and many other fertile valleys throughout the state. Becomes large and picturesque with long drooping branches and beautiful thick, checked bark. Best in deep soils with room to develop. Wonderful planted for wildlife. Deciduous, long lived. Oaks are some of the greatest trees for birds. Oak titmice, acorn woodpeckers, and many other species utilize them for nest sites, cover, insects and acorns.
Quercus tomentella
The rarest of all California oaks, an ancient relict of the mainland, now confined to the Channel Islands, off the coast of southern California. Island oak is a small evergreen tree with a rounded canopy, 25 to 40 foot tall. Beautiful dark-green, shiny, leathery leaves with prominent parallel veins are edged with widely spaced teeth. Whitish woolly hairs cover the growing tips, undersides of leaves, and the caps of the 1 inch long acorns. A natural for gardens with coastal influence where it will be drought tolerant once established. Tolerant of many soil conditions, but attains full stature in deeper soils in sheltered locations. Oaks provide beauty, shade and food and cover for a wide array of wildlife.
Ranunculus californicus
Cheerful harbinger of spring, this western native grows in vernally moist sites in a number of plant communities throughout California. Easy to grow perennial, sports bright green succulent foliage topped with slender stems 1 to 2 ft. tall and wide. A profusion of shiny, bright yellow blossoms bloom freely until soil dries out. Goes dormant with drought, returning in spring, often reseeding. Full sun to light shade. Excellent early pollen and nectar source, attractive to bees and other beneficials.
Ranunculus occidentalis
Native to open woodlands and meadows, this buttercup often occurs under deciduous oaks and buckeyes or on edges of forests. Perennial, with basal foliage, the flower stems rise 12 to 20 inches with bright yellow shiny petals. Has been surprisingly adaptable. Does fine with moderate summer irrigation, where it stays evergreen and long blooming. Once established can be allowed to go summer dry, where it will go dormant after setting seed, and returning with the winter rains.
Rhamnus crocea
An under-used evergreen shrub native to chaparral, woodland, and coastal-sage scrub communities in California. Spiny redberry can grow up to 6 feet tall and wider, but is typically in the 2 - 4 ft. height range, spreading to 6 ft. or more across. Small, leathery, dark-green ovate leaves give this tough shrub a delicate look once established. The flowers on both male and female plants are inconspicuous, blooming from late winter into early spring. Female plants produce sporadic, jelly-like red berries. Great for dappled light under oaks, or a dry, shady woodland slope with California fescue. Can tolerate more sun near the coast, but prefers afternoon shade inland. Drought-tolerant once established. Larval host for a multitude of butterflies and moths, including the pale tiger swallowtail butterfly, Ceanothus silk moth, and Hermes copper butterfly. Deer resistant.
Rhamnus ilicifolia
A handsome evergreen shrub with small, dark green, leathery, serrated leaves. Found in the foothills and mountains of southern and central California, the Sierras and west of the Sacramento Valley up to 3,500 feet. Slow-growing, reaching 6-10 feet tall and wide, with a somewhat open, upright habit. Male and female plants are separate, producing inconspicuous yellow-cream flowers from spring into early summer. Female plants produce sporadic, gelatinous red fruits. Hollyleaf redberry can be planted in full sun to shade, but prefers a bit of relief from the afternoon sun in inland sites. It requires decent drainage and is drought-tolerant once established. Larval host for the pale swallowtail butterfly. Reportedly deer resistant.
Rhododendron occidentale
A much sought after and admired native deciduous shrub found in moist places and stream banks in many plant communities throughout California. Leafs out in the spring with bright green foliage on a shrubby framework 3-6 ft. or more tall and wide. Glorious displays of fragrant azalea flowers in dense terminal clusters appear in late spring and can be pure white to pale pink often with yellow or orange markings. Needs decent light to bloom well but appreciates light shade, acid soils and regular water. Deer resistant
Rhododendron occidentale x ‘Irene Koster’
A beautiful hybrid Rhododendron involving our western azalea, introduced by a Dutch nursery in 1895. This is a deciduous shrub with massive displays of sweetly scented funnel-shaped blossoms in late spring. The large showy trusses have flower buds with dark-pink stripes that open to a light rose-pink with a splash of yellow-orange on its upper petals. Grows 6 -8 ft. tall by 4 - 6 ft. wide in part shade with regular to moderate watering. Prefers humus rich acidic soils with good drainage. The fragrant flowers attract an array of pollinators including butterflies. Deer resistant.
Rhus aromatica
An arching, mounding native shrub related to sugar bush and lemonade berry. Early spring brings a profusion of soft yellow flowers followed by orange-red fruits relished by wildlife. The leaves turn shades of yellow, orange and red in the fall. Plant in sun to light shade where it is drought, cold and heat tolerant. Useful addition to the naturalistic garden, as a shrubby groundcover, along seasonally moist streams, and for erosion control. Used by the native people for basketry.
Rhus integrifolia
This sturdy native shrub or small tree is highly valued for its evergreen foliage and as a source of food for birds, bees and butterflies. Round, serrated, leaves, flatter than those of the sugar bush, cover this plant from head to toe. In late winter to early spring, white to pink flower clusters emerge, followed by sticky, reddish fruits. Ranging in height and width from 6 to 20 ft., lemonade berry is very tolerant of pruning, either into a small tree or a low hedge. Cold hardy to about 20 degrees. Plant in full sun to part shade. Will be very drought tolerant once established. Fire resistant. Deer resistant.
Rhus ovata
Handsome evergreen shrub native to dry slopes away from the coast in Southern California, Baja, and Arizona. A durable shrub thriving in hot, rocky conditions in full sun to part shade where it will be completely drought tolerant once established. Grows 6 - 10 ft. tall and wide. A profusion of dense flower clusters are rosy tinted in bud opening to white with a pinkish blush. Small reddish fruits follow that are coated with a sugary secretion that tastes lemony. Excellent subject for hot, dry inland conditions. Good for birds, bees and butterflies. Fire resistant. Deer resistant.
Ribes aureum
A vigorous deciduous shrub with masses of cheerful yellow blooms that appear in early spring. The light green foliage returns in late winter followed by delicate clusters of bright yellow tubular flowers that mature to a reddish-orange. Makes a wonderful addition to any habitat garden. Hummingbirds and bees adore the flowers, and the golden berries attract birds. Tolerates a variety of conditions from creeksides to dry woodland foothills to higher elevations - and even snow. Grows 6 to 8 ft. tall and wide. Where it finds water, it can spread by suckers, but is highly amenable to pruning. Adaptable to sun or shade, but does best with afternoon shade and moderate to occasional summer water.
Ribes bracteosum
Native from Mendocino County northwards, this deciduous shrub is distinctive for its long, upright inflorescences and large, shiny leaves up to eight inches wide. As many as fifty of the soft orange, saucer-shaped flowers can occur on a single stem in the spring followed by small blue fruits in late summer. In shaded, moist conditions the blue currant can reach a height and width of about six feet but can get larger in cool, wet areas along the coast. Combine with other plants of the redwood forest such as ferns, sorrel and wild ginger.
Ribes californicum
Undemanding, winter blooming, deciduous shrub, native to Coast Range mountains of California, from Mendocino County south to Orange County. Excellent choice for habitat gardens, where it provides abundant flowers and fruits plus thorny, protective cover. Variable in size, this spiny shrub can grow 4 - 6 ft. tall and wide. The pendant flowers are tiny but numerous and charming on close inspection. The tubular flower parts are white and extend beyond the reflexed red sepals, and are highly attractive to hummingbirds and other pollinators. Red, bristly, globular fruits follow and are adored by birds. The bright green leaves often take on striking crimson colors in the late summer before going dormant with drought. Host plant to several butterfly species as well as the white-lined sphinx moth. Best with light shade and a little irrigation, though once established it is completely drought tolerant.
Ribes divaricatum var. pubiflorum
Native to coastal scrub, moist woods and shady canyons of the Pacific coast from British Columbia south through much of coastal California. This gooseberry is perhaps the most tasty of all of our native Ribes. The berries have the added benefit of being free of thorns. Forms an arching shrub 3-6 ft. tall and a bit wider with thorns at the leaf nodes. The tiny flowers are composed of reddish sepals and white petals that dangle beneath the branches and are attractive to hummingbirds. The small, blue-black berries are relished by birds. Plant in light shade with some summer moisture. Will tolerate full sun near the coast. Useful as a barrier, hedgerow or habitat plant where it provides excellent food and thorny cover for birds.
Ribes menziesii
A gooseberry of low elevation forests, growing to around 5-8 ft. tall with an open, arching habit. Bright green scalloped leaves with pale undersides are set on spiny stems. The charming flowers are small but sweet, with maroon sepals and white petals dangling beneath the thorny branches offering nectar to hummingbirds. The spiny red fruits that follow are decorative and attractive to birds. Often found on the edge or in openings of forests, the canyon gooseberry does best with light shade. It is drought tolerant especially near the coast, though it appreciates occasional summer water. An excellent habitat plant that provides shelter and food for a wide variety of birds.
Ribes roezlii
The Sierra gooseberry's natural range is far beyond the Sierras, with varieties growing in the mountains of northern, southern and central California. Forms an arching shrub of thorny branches with pretty, little scalloped leaves, 2 - 4 ft. tall and wide. Pendant flowers are made up of burgundy-red sepals and small white to pink petals with protruding stamens, looking something like miniature fuchsias. Custom built for hummingbirds. In spring, showy, rounded fruits covered with prickles follow the flowers, starting out green and ripening to red, spiny globes which are relished by birds. This charming shrub is a lovely addition to the woodland garden where they receive light to moderate shade and are drought tolerant once established. Needs good drainage.
Ribes sanguineum v. glutinosum ‘Cal Flora White’
A Cal Flora Nursery original, a chance seedling in our nursery landscape. We watched this seedling develop into an elegant, eight foot, vase shaped shrub. The five inch pendulous racemes dangle from the branch tips and are pure white. Give flowering currants light or part shade except along the immediate coast where they grow in full sun. Moderate to occasional water once established. Hummingbird and bumblebee favorite. Birds enjoy the fruits.
Ribes sanguineum v. glutinosum ‘Claremont’
Distinctive for its extra long, pendulous racemes of pink flowers with white centers. This Rancho Santa Ana Botanic Garden selection of the pink flowering currant is particularly vigorous, featuring abundant floral displays in early spring. Will attain a height and spread of 6 - 8 ft over time. Best with light shade and a little summer water. Important early nectar source for bumblebees and hummingbirds. Berries attract many birds including grosbeak and mockingbirds.
Ribes sanguineum v. glutinosum ‘Heart’s Delight’
A coastal Marin County selection of one of the West's choicest native shrubs. Deciduous, grows 6 ft. tall or more. In early spring it produces long drooping racemes of deep rosy-pink blossoms. Best with light shade inland, humusy soil and some summer water. Hummingbirds love the flowers and the berries attract many birds including robins, grosbeak and mockingbirds.