Adelinia (Cynoglossum) grandis
From woodlands throughout Northern and Central California comes this alluring bluebells relative. Dainty flower clusters ranging in color from periwinkle blue to lavender appear on slender stalks in the spring. The leaves are what gives this plant its name: grey-green and tongue-shaped, emerging in the winter from basal roots. Plant in bright shade and don’t water once established. Needs decent drainage. Once this plant goes to seed it will go dormant, re-emerging in late winter. A great accent plant for under the dry shade of deciduous oaks.
Agastache ‘Blue Boa’
From Terra Nova Nurseries in Oregon, this stunning hybrid has won awards at a number of plant trials. Growing 2-1/2 ft. tall and 2 ft. wide with fragrant foliage and flowers of deep violet-blue. The large and sturdy terminal flower spikes dazzle mid to late summer into fall and are highly attractive to hummingbirds, bees and butterflies. Best in full sun with good drainage. Drought tolerant, but happiest with moderate to occasional summer water. Deer resistant.
Aster x frikartii ‘Monch’
A particularly fine hybrid from the 1920’s, valued for its long display of clear lavender-blue daisies on stout, upright foliage, to around 2 ft. tall and wide. Easy to grow in full sun with good drainage and regular to moderate water. A wide variety of bee species visit this perennial, foraging for nectar and pollen. Attractive to butterflies too. Its long bloom period, May through October, make it a wonderful color accent and a powerhouse in the pollinator garden.
Camassia leichtlinii ssp. suksdorfii
Similar to the common camas, but with larger, star-shaped flowers ranging in color from soft to dark violet-blue on stems up to 3 ft tall. Native to grasslands and moist meadows that dry out in the summer. Also found in open, well lit woodlands. Easy to grow in full sun to light shade in a variety of soil types, including heavy clay. Allow to go dry after seed is set, where it will go completely dormant. This eye catching beauty is appealing to bees, butterflies and hummingbirds. An excellent container plant and cut flower. Deer resistant.
Camassia quamash
Camas lily is a beautiful native bulb, producing stunning displays of sky blue to violet-purple, star-shaped flowers. Found throughout much of the western United States, growing in moist meadows and grasslands that dry out in the summer. Important species to native peoples, who encouraged the bulb through fire management. Historical accounts describe fields of blue from the massive floral displays. Easy to grow in full sun to very light shade and tolerant of a wide variety of soils, including heavy clay. Long, slender leaves give way to erect racemes of blossoms, to 2 ft. tall in late spring. Allow to go dry once seed set commences. Dormant in the winter. An excellent container plant and cut flower. A favorite of bees, butterflies and hummingbirds. Deer resistant.
Campanula rotundifolia
This charming little perennial is found growing around the world in the Northern Hemisphere, including Northern California. Forms a basal mound of small, heart-shaped, green leaves with slender flowering stems rising to about a foot tall. Sweet, little, pendant, lavender-blue, bell-shaped flowers, bloom sporadically in the summer and into the fall. Grow in lightly shaded woodland settings with gravelly soils and regular moisture. Perfect rock garden, crevice or container plant. Bee pollinated.
Ceanothus ‘Antonette’
An exciting introduction by Native Sons Nursery which was discovered in their landscape. ‘Antonette’ is believed to be a cross between Ceanothus arboreus and Ceanothus ‘Cynthia Postan’ with unusual elongated leaves which remind us of a rockrose. Grows 8 – 10 feet tall and 6 – 8 feet wide with spectacular displays of frosted, violet-blue flowers in early spring. Before they fully emerge, the flower buds display a pleasing rosy color. Plant in full sun with occasional to little summer water once established. Valuable habitat plant, providing food and cover for birds, bees and butterflies.
Ceanothus ‘Better Than Ray Hartman’
A friend of ours, Eric Nelson, discovered this spectacular selection growing on a property near where he lived. Masses of rich, blue-purple flowers held in large sprays cover the plant in spring, attracting bees and butterflies. The seeds which follow feed an array of birds. Reaches 10 – 15 ft. tall and wide with larger, deep-green, rounded leaves. We believe this plant is an existing cultivar, but none of the Ceanothus experts have been able to reach a consensus on exactly which one, hence the peculiar name referencing a selection which it resembles. Plant in full sun to light shade and water occasionally or less once established.
Ceanothus ‘Blue Jeans’
Not the color of denim exactly, the profuse springtime blossoms of 'Blue Jeans' are a rich lavender-purple. Erect evergreen shrub 6 ft. tall and wide with small shiny green leaves. Vigorous and fast growing. Best in full sun with little to no water once established. Tolerates heavy soils. Shrubby Ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.
Ceanothus ‘Blue Ray’
A Suncrest Nursery introduction, this is a cross between two popular cultivars, Ceanothus 'Ray Hartman' and Ceanothus 'Dark Star'. Grows 10 feet tall by 15 ft. wide with deep green textured leaves on sturdy stems forming a large mound. Deep vivid blue flowers in dense clusters cover the shrub in spring. Plant in full sun with occasional to no summer water once established. Ceanothus, when in flower, are highly attractive to pollinators of all sorts.
Ceanothus ‘Celestial Blue’
A beautiful hybrid California lilac selected and introduced by Las Pilitas Nursery. Luminous, rich blue flowers, in tight, conical clusters put on a massive display in spring with the added bonus of sporadic blooming through summer and into fall. Growing 6-8 ft. tall and wide with a mounding habit. Useful as an accent, informal hedge or screen shrub where it grows in full sun to light shade with little to no water once established. Ceanothus are an excellent addition to the habitat garden attracting a myriad of insects and birds.
Ceanothus ‘Centennial’
This low growing Ceanothus has bright, cobalt-blue flowers and small dark-green, shiny leaves. Spreads quickly to around one foot tall by 6 - 8 feet wide. The flowers are displayed in profusions of small pom-poms colored an intense deep-blue set above small glossy foliage. Drought tolerant but will tolerate moderate irrigation in faster draining soils. More shade tolerant than many Ceanothus but will take full sun except in hot, inland areas. Selected by Roger Raiche at Horseshoe Cove, Sonoma County.
Ceanothus ‘Concha’
An adaptable shrub growing 6 ft. tall and wide, with a dazzling display of glowing purple-blue flowers in the spring. The gracefully arching branches carry dark green shiny leaves and are tolerant of light pruning. Thrives in full sun with little or no water once established. More tolerant of heavy soils and summer watering than most ceanothus. Shrubby Ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.
Ceanothus ‘Coronado’
Phil van Soelen selected this striking natural hybrid from along the Sonoma Coast. It was named for the late David Coronado, our dear friend and a talented plantsmen. Compact habit growing to around 2 ft. tall and 6 ft. wide with dark green, deeply veined, toothed leaves. Frosty blue buds open to luminous deep blue blossoms in early spring. Perhaps best in somewhat cooler climates where it performs beautifully in full sun with moderate to no water once established. Ceanothus are excellent habitat plants providing cover and food for wildlife. The early flowers provide nectar for pollinators and seeds for birds. The myriad of insects attracted to the flowers are an added attraction to birds.
Ceanothus ‘Dark Star’
This popular small leaved shrub reaches 4 - 6 ft. high by 6 - 10 ft. wide. The electric cobalt-blue flowers cover the plant in spring and are very popular with bees and butterflies. Plant in full sun and provide decent drainage. Not a good choice for hot, inland areas. Drought tolerant. 'Dark Star' is VERY similar to 'Julia Phelps' but differs mainly in size. 'Dark Star' tends to stay a little smaller. Shrubby Ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.
Ceanothus ‘Frosty Blue’
A Rancho Santa Ana introduction from the mid 1970's. This upright evergreen shrub reaches 8 to 12 feet tall and 10 to 15 feet wide with glossy green, textured foliage. Flowers in late spring with 2-4 inch panicles of beautiful blue flowers with a frosted appearance due to the white bracts on the buds. Useful as a specimen or screen due to its rapid growth. Amenable to pruning and can be trained into a small tree or espaliered subject. This reliable cultivar tolerates heavy soils better than most upright Ceanothus. Does best in full sun and will be drought tolerant once established. California lilac are valuable additions to the habitat garden.
Ceanothus ‘Joan Mirov’
A naturally occurring hybrid from the Sonoma Coast selected by Roger Raiche and introduced by the U.C. Berkeley Botanic Garden. Low spreading habit with a dense form grows 4 ft. tall spreading widely 6-10 ft. or more. The small dark green shiny leaves are topped with an abundance of dark pink buds opening to cobalt blue flower clusters in the spring. An excellent bank cover where a dense ground covering shrub is needed on a sunny dry site. When planted inland a little afternoon shade and some summer irrigation is best. Ceanothus are valuable habitat plants where they offer food and cover and excellent forage for pollinators.
Ceanothus ‘Joyce Coulter’
A very useful medium sized mounding evergreen groundcover discovered in 1956 by John Coulter. Grows 2 - 5 ft. tall and spreads 12 ft. or more wide. Medium-blue flowers cover this shrub in spring. Tolerates garden conditions better than most Ceanothus. Responds well to shearing and can easily be kept to a more compact size. Plant in full sun where it is drought tolerant but best with some summer water in hot interior sites. Shrubby ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.
Ceanothus ‘Julia Phelps’
This much admired hybrid Ceanothus features a compact and bushy form, about 6 to 8 ft. tall and 8 to 10 ft. wide. Spectacular in spring when glowing dark indigo flowers cover the plant, accented by reddish buds. Small and crinkled dark green leaves provide an excellent backdrop for the richly colored flowers. Plant in full sun. Needs good drainage and summer drought once established. Does not do well in hot, interior climates. Very hard to distinguish from 'Dark Star', 'Julia Phelps' is somewhat larger. Shrubby Ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds.
Ceanothus ‘Ray Hartman’
Beautiful large shrub rapidly grows 12 - 20 ft. tall and wide. Dark, shiny green foliage with large, medium blue spike-like flower clusters in the spring. Tolerates pruning and can be trained as a small tree or sheared to create a tall hedge. This selection is especially adaptable, tolerating heat, some summer water and drought. Plant in sun or very light shade. 'Ray Hartman' is a cross between the species C. arboreus and C. thyrsiflorus var. griseus. Ceanothus provide habitat and forage for a wide variety of birds, bees and butterflies.
Ceanothus arboreus ‘Cliff Schmidt’
Selected from Santa Cruz Island by Native Son's Nursery, this handsome cultivar has a strong upright habit, growing into a tall and spreading shrub as much as 15-20 ft. tall and wide. Large dark green glossy leaves have white felted undersides. Medium blue flower spikes blossom in late winter to early spring and often again in fall. Excellent for coastal gardens in full sun, give some afternoon shade and a little summer water in warmer inland sites. This large shrub can be pruned into a lovely small tree. Ceanothus are excellent additions to habitat gardens where they provide food, cover and nesting sites for birds and beneficial insects.
Ceanothus cuneatus
One of California's most widespread species offering a variety of forms. Typically buckbrush grows as an arching shrub growing 5 - 8 ft. or more tall and wide with small, thick, leathery leaves. Flowers can range from white to lavender to purple and are produced in small tight clusters in early spring. When in full bloom, the powerfully sweet scent of the flowers engulfs the visiting hiker. An excellent choice for hot dry conditions and difficult sites where it will grow in full sun with little to no water once established. Valuable addition to the habitat garden where it provides food and cover for a wide array of wildlife, birds, bees and butterflies. Said to be deer resistant.
Ceanothus cuneatus – flat form
This unusual form of the ubiquitous buckbrush comes to us from Yerba Buena Nursery. Reaches a height of only 1 - 2 ft. and spreads out to 6 ft. or more. Pale blue flowers appear in early spring and perfume the air with their sweet fragrance. Bees and butterflies are drawn to the flowers while birds enjoy the seeds which follow. An excellent groundcover for hot, dry banks requiring no irrigation once established. Needs full sun and good drainage. Likely to be deer resistant.
Ceanothus divergens ssp. confusus
A species of special concern due to its limited distribution in the wild and continued habitat loss. The Rincon Ridge ceanothus is worth considering for those hot inland gardens where some of the more commonly available coastal ceanothus may not be as long lived. Forms a low growing mound of decumbent stems with small holly-like leaves usually under a foot tall. Flowers in dense clusters in early spring are lavender-purple. Plant in sunny areas with good drainage and little to no water once established. Ceanothus are wonderful additions to the habitat garden attracting a wide array of wildlife. This species is likely to be deer resistant.
Ceanothus foliosus
Not commonly found in the trade, this rugged shrub is native to dry slopes of the Coast Ranges nearly throughout the state. Grows to around 3 - 4 ft. tall by 6 ft. wide, with glossy wavy-edged leaves and brilliant blue flower clusters in the spring. Perfectly suited for dry banks and slopes in hot summer areas where it tolerates heat, drought and even winter cold. Not tolerant of summer water once established. Excellent for the habitat garden where it provides nectar to pollinators, larval food for moths and butterflies and cover and seed for birds.
Ceanothus gloriosus var. exaltatus ‘Emily Brown’
One of the earliest blooming California lilacs. A low spreading evergreen shrub 2 - 4 ft. tall, 8 - 10 ft. wide with dark green hollylike leaves. Flowers of dark violet blue in 1 inch clusters cover the shrub in early spring. Sun and drought tolerant, but will need some afternoon shade in hot areas. Shrubby ceanothus provide seeds eaten by bushtits, mockingbirds, quail and finches, as well as cover for birds. Perhaps the most deer resistant of the ceanothus.
Ceanothus gloriosus var. gloriosus ‘Anchor Bay’
This Point Reyes ceanothus grows 1 - 2 ft. high or more and spreads 8 ft. wide or more with an attractively dense and luxuriant appearance. The evergreen foliage is dark green and holly-like in shape. Flowers of blue-violet cover the plant in spring. Sun to light shade. Drought tolerant along the coast - a little extra water inland but will tolerate up to moderate irrigation. Ceanothus are great additions to the habitat garden offering food and cover for birds and nectar for bees and butterflies. This species is somewhat deer resistant.