Colleen Johnsen's California Plants
Class #164: California Natives & Plant Communities, Lab #9

Class #164: California Natives & Plant Communities, Lab #9


Botanical Name: Ceanothus impressus
Botanical Pronunciation: see-ah-KNOW-thuss im-PRESS-us
Common Name: Santa Barbara Ceanothus
Family Name: Ramnaceae
Diseases: Root rot.
Flower: Massive clusters of tiny flowrs blue to lavender in March to May.
Growth: 5-6+' X 4-7+', fast growing.
Landscape Use: Attracts bird/bees, background, deer proof, erosion control, screen. sea coast, shrub mass and wind break.
Light: Sun on the coast and coastal range and part sun on the coast.
Location: Bottom of path Hort. Center entry rpad
Pest: None.
Problems: None.
Propagation: By cuttings.
Pruning: As little as possible, pinch tips to induce bushiness.
Tolerance: Drought, winds, sea coast, deer and neglect.
Type: Shrub, dence and mounding, medium to large scale.
Water: Little to none in summer.
California Native: Yes
Description: Hardy to 5 degrees.

Sunset zones 5, 7-9, 14-17, 19-21, 22-24.
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Botanical Name: Achillea millefolium
Botanical Pronunciation: Ah-KILL-ee-ah mill-eh-FOAL-uhm
Common Name: Yarrow, Millefoil
Family Name: Asteraceae
Diseases: None.
Flower: White (pink) in the spring to autumn.
Growth: 6-12 x 2'+, fast gtrowth.
Landscape Use: Attracts birds/bees, cut flower dried, deer proff, erosion control, fir retardant, ground cover, attracts, rock garden and sea coast.
Light: On the coast and inland full sun to part shade but blooms better in the sun.
Location: Front entry Sesnon House.
Pest: None.
Problems: None.
Propagation: Direct seed, division but rarely by cuttings.
Pruning: Mow as an informal lawn and trim seed heads late summer.
Tolerance: Drought, wind, sea coast, heat, deer, neglect and lawn irrigation.
Type: Deciduous perennial ground cover, dense, mat forming and spreading.
Water: Dry between . Drought tolerant once established.
California Native: Yes
Description: Soft low groundcover that is walkable.
Hardy to 0 degrees.
Sunset zones all zones.
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Botanical Name: Juncus patens
Botanical Pronunciation: JUNK-us PAY-tens
Common Name: Spreading Rush
Family Name: Juncaceae
Diseases: None.
Flower: Small clusters of dark brown flowers at tips.
Growth: 2' x 2' fast growth.
Landscape Use: Deer proof, erosion control and sea coast.
Light: Sun to part shade on the coast and part shade inland.
Location: Seymore Discovery Center.
Pest: None.
Problems: Invasive is moist areas.
Propagation: By division.
Pruning: Hand prune to ground or just prune out dead.
Tolerance: Winds, sea coast, deer, neglet, poor drainage and lawn irrigation
Type: Herbacious perennial sedge that is dense, clumping, upright and picturesque.
Water: Ample moisure to moderate.
California Native: Yes
Description: This plant is a natural, wild looking one.

Hardy to 0 degrees.
Sunset zones 4-9, 14-24.

Botanical Name: Dudleya caesepitosa
Botanical Pronunciation: DUD-lee-ah CESS-pit-oss-ah
Common Name: Bluff lettuce
Family Name: Crassulaceae
Diseases: None.
Flower: Cupped yellow on a vertical 1/2" dia. x 6-12" stalk in April-July. Leaves are edible.
Growth: 6" x 6-12" spread. average growth.
Landscape Use: Can be used as a border/edging, is deer proof, fire retardant, a ground cover, spillig over a rock wall and in a rock garden.
Light: Sun on the coast and inland.
Location: Campus Hort. Center entry rd near Redwoods and Entry court
Pest: None.
Problems: Crown rot in dense soils.
Propagation: By seed and divisions.
Pruning: Dead head flowers.
Tolerance: Drought, heat, insect, neglect, seacoast and winds.
Type: Succulent that is clumping, dense and round.
Water: Dry between and none in summer.
California Native: Yes
Description: Hardy to 20 degrees.

Sunset zones 9, 14-17, 19-24

Prefers sandy well drained soil but will tolerate clay.
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Botanical Name: Satureja douglasii
Botanical Pronunciation: Sat-ture-a-ah doug-loss-ee-i
Common Name: Yerba Buena
Family Name: Lamiaceae
Diseases: None.
Landscape Use: Container plant, deer proof, erosion control, fire retardant, groundcover, pond/stream, restoration, shade plant and wall spiller.
Light: Sun to shade on the coast and part sun to shade inland.
Location: Campus Hort. Center entry road near redwoods and entry court.
Pest: None.
Problems: Rooted runners.
Propagation: By cuttings and layering.
Pruning: None required.
Tolerance: Deer, drought, lawn irrigation, neglect, seacoast.
Type: Broadleaf evergreen groundcover that is dense, mat like, spreading and weeping.
Water: Monthly/dry season.
California Native: Yes
Description: Hardy to 10 degrees.
Sunset zones 4-9, 14-24.

Prefers acid loam that is well-drained but will tolerate clay.

Botanical Name: Ceanothus thrysiflorus
Botanical Pronunciation: See-a-KNOW-thuss / thir-seh-FLOOR- us
Common Name: Blue Blossom Ceanothus
Family Name: Rhamnaceae
Diseases: Root rot.
Flower: Light to medium blue spike like cluster 3
Growth: 6-21' height X 8-30' spread, fast growth.
Landscape Use: Attracts bees, espalier, hedge, screen, shade and specimen.
Light: Sun to part shade on the coast and part shade inland.
Location: Campus Hort. Center Entry road near redwoods, close to sign.
Pest: Apids and whitefly (control) reduce summer water.
Problems: Short lived 5-10 years.
Propagation: By seeds, layers, cuttings of mature wood in autumn or soft wood in spring.
Pruning: None required, remove dead limbs but can be sheared into a hedge.
Tolerance: Drought, heat, winds & sea coast.
Type: Broadleaf evergreen small tree or shrub.
Water: Once establised, none in summer.
California Native: Yes
Description: Hardy to 0 degrees.
Sunset zones 1-9, 14-24.

Prefers well-drained loam.

MENTION IN LAB 10
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Botanical Name: Salvia x 'Bee's Bliss'
Botanical Pronunciation: SAL-vee-ah
Common Name: Bee's Bliss Salvia
Family Name: Lamiaceae
Diseases: Crown rot in wet soil, shade (control) Plant on a hill and avoid wet soils and shade.
Flower: Tubular whorts in lavender-blue in the spring that leaves have a fragrance and is not edible.
Growth: 18-24" x 10' spread, fast growing.
Landscape Use: Attracts bees, bank cover, erosion control, groundcover, rock garden, plant mass and wall spiller.
Light: Sun on coast and inland.
Location: Hort Court entry road hillside.
Pest: None.
Problems: Rooted runners.
Propagation: By cuttings and rooted stems.
Pruning: Tip prune as needed.
Tolerance: Deer, drought, heat, neglect, seacoast and modest traffic.
Type: Broadleaf evergreen groundcover, subshrub that is dense, mounding, spreading and trailing with medium texture.
Water: Only until established (2 dry seasons) and avoid summer watering.
California Native: Yes
Description: Hardy to 15 degrees.
Sunset Zones: 8,9, 14-17, 19-24.

Like well-drained soil.
Needs no fertilizer.

Botanical Name: Claytonia perfoliata
Common Name: Miner's Lettuce
Family Name: Portulaceae
Diseases: None.
Flower: White star-like, bell-like clusters in center of leaf in Feb.-May.
Growth: 6-12" x 6-12' fast growing.
Landscape Use: Attracts birds, container plant, deer proof, fire retardant, groundcover, and shade plant.
Light: Sun to moisy/heavy shade.
Location: Wilder Ranch.
Pest: None.
Problems: Reseeds.
Propagation: By seeds.
Pruning: None required.
Tolerance: Deer, insect/disease resistant, neglect and seacoast.
Type: Broadleaf evergreen groundcover that is clumping, mat like and spreads.
Water: Ample.
California Native: Yes
Description: Hardy to 20 degrees.

MENTIONED IN LAB 10