Colleen Johnsen's California Plants
Class #164: California Natives & Plant Communities, Lab #12

Class #164: California Natives & Plant Communities, Lab #12


Botanical Name: Heteromeles arbutifolia
Botanical Pronunciation: het-er-RAHM-eh-lez are butte-e-FOAL-ee-ah
Common Name: Toyon, Christmas Berry
Family Name: Rosaceae
Diseases: Fungle leaf spot and root rot.
Growth: 8-20' x 10-15', slow to average growth.
Light: Sun to shade.
Pest: Aphids and mites.
Problems: Extremely invasive under ground.
Pruning: February they can be cut back to 3'. Tip prune to encourage flower and fruit.
Type: Broadleaf evergreen shrub.
Water: Dry between and none in summer.
California Native: Yes
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Botanical Name: Ribes sanguineum glutinosum
Botanical Pronunciation: RYE-bees san-GWIN-ee-uhm
Common Name: Pink Flowering Currant
Family Name: Saxifragaceae
Diseases: None but will quick decline if watered on a summer day.
Flower: Panicles of 10-30 drooping 3-6" x each 1/4" funnel-shaped flowers of white, pink, and red in Feb.-April with fragrant leaves.
Growth: 5-10' heigh x 6' spread, fast growth.
Landscape Use: Attracts bees/birds, background, espalier informal, hedge hand prune, screen, shrub/plant mass and specimen plant.
Light: Sun to part shade on the coast and part shade inland.
Location: North of LRC & west of 100 bldg. & front of Sesnon House.
Pest: Spider mites in containers.
Problems: None.
Propagation: By cuttings and seeds.
Pruning: Tip prune as desired.
Tolerance: Drought, insects and neglect.
Type: Deciduous shrub.
Water: Monthly and avoid summer watering.
California Native: Yes
Description: Hardy to 10 degrees.
Sunset zones 4-9, 14-24, A3
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Botanical Name: Sedum spathulifolium 'Purpureum'
Common Name: Purple Stonecrop
Family Name: Crassulaceae
California Native: Yes
Description: At: SANTA CRUZ GROUND COVER
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Botanical Name: Salvia spathacea
Botanical Pronunciation: SAL-vee-ah spath-AY-see-ah
Common Name: Hummingbird Sage
Family Name: Lamiaceae
Diseases: Root rot.
Flower: Beet root purple about 1 inch in length in the spring to fall. IS a good cut flower rises 2-3 ft. above foliage.
Growth: 2' hight x 5'+ spread and is average growth.
Light: Likes best, part sun on the coast and inland but will grow any place.
Pest: None.
Problems: Root rot.
Propagation: Division of rhizomes, cuttings and seeds.
Pruning: To remove old flowers and stalks.
Type: Broadleaf evergreen herb perennial ground cover.
Water: Dry between monthly.
California Native: Yes
Description: Green speading ground cover that is dense that is a spreading mat forming.
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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: Fragaria californica
Botanical Pronunciation: Fra-JERR-ee-ah / cal-eh-FOUR-neh-kah
Common Name: Wood Strawberry
Family Name: Rosaceae
Diseases: None.
Flower: White with yellow circular single rose 1
Light: Full sun to part shade on the coast and part shade inland.
Pest: Snails and slugs.
Problems: Invasive.
Propagation: Rooted off shoots.
Pruning: To keep in bounds.
Type: Broadleaf heerbaceous groundcover, low semi-walkable.
Water: Monthly.
California Native: Yes
Description: Hardy to
Sunset zones

MENTIONED IN LAB 10
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Botanical Name: Sambucus mexicana
Botanical Pronunciation: Sam-BUE-cuss / mexi-eh-CANE-ah
Common Name: Blue Elderberry
Family Name: Caprifoliaceae
Diseases: None.
Flower: Creamy-white Star flat topped clusters of 2-8
Light: Full sun to full shade both on the coast and inland.
Pest: None.
Problems: None.
Propagation: By seeds or by cuttings.
Pruning: Hard pruning will ensure denseness.
Type: Deciduous small tree or shrub
Water: Moderate to none in summer but looks better with watering.
California Native: Yes
Description: Sprawling, pright multi trunked shrub with edible fruit.
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Botanical Name: Umbellularia californica
Botanical Pronunciation: Uhm-bell-yew-LAIR-ee-ah / cal-eh-FOR-neh-kah
Common Name: California Bay
Family Name: Lauraceae
Diseases: Sooty mold.
Flower: Yellowish in clusters to 1
Light: Full sun on the coast and full sun to full shade inland.
Pest: Aphids and scale.
Problems: Pavement buster and excess litter.
Propagation: By seed.
Pruning: As desired to control size and can be sheared.
Type: Broadleaf evergreen tree and shrub.
Water: Moderate to none in summer.
California Native: Yes
Description: Very large scale tree or hedge. Use carefully.
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Botanical Name: Ceanothus gloriosus exaltatus
Botanical Pronunciation: see-ah-KNOE-thus glor-ee-OH-sus x-all-TAY-tuss
Common Name: Emily Brown Ceonothus
Family Name: Asteraceae
Diseases: Crown rot in wet soil.
Flower: Spikes of dark violet-blue star shaped3/4' x 3/4" in the spring.
Growth: 1-2" X 4-6' spread that is fast growingg.
Landscape Use: Attracts bees/birds, bank cover, erosion control and groundcover.
Light: Sun on the coast and part sun inland.
Location: Hort Entry
Pest: None.
Problems: Short-lived in gardens.
Propagation: By cuttings.
Pruning: Tip prune lightly if at all.
Tolerance: Drought, seacoast and winds.
Type: Broudleaf evergreen groundcover that is dense, spreading and arching.
Water: Only until established(2 years), none in summer and monthly/dry season.
California Native: Yes
Description: Hardy to 10 degrees.
Sunset zones 5-9, 14-24.

Botanical Name: Ribes speciosum
Botanical Pronunciation: RYE-bees SPECE-ee-oh-sum
Common Name: Fuchsia flowering Gooseberry
Family Name: Saxifragaceae
Diseases: None.
Flower: Cherry-red fuchsia-like, tubular shaped 1-1/2" X 1/4' in Jan.-May.
Growth: 4-8' hright X 6-10' spread of average to fast growth.
Landscape Use: Attracts bees/birds, atracts butterflies, hedge, seacoast, specimen plant, barrier and oak understory.
Light: Sun to shade on the coast to part sun to shade inland.
Location: Behind Yoga center.
Pest: None.
Problems: None.
Propagation: By cuttings, layering and seeds,
Pruning: Dead head branches.
Tolerance: Deer, drought, insects, neglect and seacoast.
Type: Deciduius shrub that in clumping spreading, upright and arching.
Water: Monthly/dry season, none in summer.
California Native: Yes
Description: Hardy to 0-15 degrees.
Sunset 7-9, 14-24.

Prefers well drained soil but will tolerate clay.