Colleen Johnsen's California Plants
Class #164: California Natives & Plant Communities, Lab #15

Class #164: California Natives & Plant Communities, Lab #15


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: Cercis occidentalis
Botanical Pronunciation: SAIRciss ox-eh-den-TAL-iss
Common Name: Western Redbud
Family Name: Fabaceae
Diseases: Verticillium wilt (control) try pruning affected limbs.
Flower: Magenta-rose in pea shape 1/2" dia. in early mid spring, Feb-April
Growth: 10-18' height X 10-15'+ spread, average growth.
Landscape Use: Bank cover, container plant, specimen plant and grove.
Light: Sun to part shade inland and sun on the coast.
Location: Behind Sesnon, by 2600 building and corner of Front & Soquel Street.
Pest: Aphids and catapillers.
Problems: None.
Propagation: By cuttings and seeds.
Pruning: Remove dead limbs in winter or after bloom.
Tolerance: Drought, heat, neglect and poor drainage.
Type: Deciduous tree or shrub.
Water: Dry between to none in summer.
California Native: Yes
Description: Hardy to 0 degrees.
Sunset zones 2-24.

Prefers all types of soil.
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Botanical Name: Rhamnus californica*
Botanical Pronunciation: RAM-nuss kal-eh-FOR-neh-kah
Common Name: Coffeeberry
Family Name: Rhamaceae
Diseases: None.
Flower: Umbels 2
Growth: 5-15' x 6-15' and average growth.
Landscape Use: Bank cover, deer proof, informal hedge, screen and seacoast.
Light: Sun to shade both on the coast and inland.
Location: New Brighten State Beach.
Pest: Snails.
Problems: None.
Propagation: By seed or by cuttings of mature wood under glass.
Pruning: As desired to control size.
Tolerance: Deer, drought, heat, Insect/disease ristant, lawn irrigation, neglect, winds and seacoast.
Type: Broadleaf evergreen shrub that is dense with a medium texture.
Water: Monthly.
California Native: Yes
Description: Green structural plant to compliment other plants.

Hardy to 0-15 degrees.
Sunset zones 4-9, 14-24, Hi, H2

Prefers moist soil but will tolerate clay soil.
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Botanical Name: Mimulus aurantiacus
Botanical Pronunciation: MIM-yew-luss or-ON-tee-ock-us
Common Name: Sticky Monkey Flower
Family Name: Scrophulariaceae
Diseases: Sensitive to soil fungi.
Flower: Tubular yellow- orange in March - August. Good summer flowering display.
Growth: 2-4 feet x 2-4 feet , fast growing.
Landscape Use: Background, bank cover, rock garden and shrub mass.
Light: On the coast and inland both full sun and part shade.
Location: Carothers residence
Pest: None.
Problems: Short lived in gardens because they need good drainage.
Propagation: Seed, division and cuttings. Root easily in moist sand.
Pruning: Hard pruning in early spring will keep growth from getting leggy.
Tolerance: Drought, sea coast, heat and neglect.
Type: Broadleaf evergreen shrub or subshrub that is semi-open, spreading upright and globular.
Water: Drought tolerant but also thrives with additional water.
California Native: Yes
Description: Hardy to 15 degrees.

Sunset zones 7,8,9 & 14-24.

Just mentioned plant in Labs 8, 11 & 15
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Botanical Name: Salvia sonomensis
Common Name: Creeping Sage
Diseases: Crown rot
Growth: 12-18" tall x 2-3' across.
Light: Sun to shade on the coast.
Pest: Aphids.
Problems: Gets woody.
Type: Broadleaf evergreen ground cover.
Water: Dry between, monthly to none in summer.
California Native: Yes
Description: Mentioned

UCSC ARBORETUM
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Botanical Name: Aesculus california *
Botanical Pronunciation: ESS-kew-luss
Common Name: Buckeye
Family Name: Hippocastanaceae
Diseases: None.
Flower: White/pink dense apanicle of tubular 6-10' z 2-3' wide flowers in April-June that are fragrant.
Growth: 39-50' x 30-50', average to fast growth.
Landscape Use: Attracts butterflies, background,, shade plant and specimen plant.
Light: Sun to part shade.
Location: Wilder Ranch and San Lorenzo River Walk
Pest: None.
Problems: Excesss litter.
Propagation: By seeds.
Pruning: To control size or accentuate sculptural look.
Tolerance: Deer, drought, heat, neglect and poor drainage.
Type: Deciduous tree that is dense, picturque, round spreading and upright.
Water: Monthly/dry season to none in summer.
California Native: Yes
Description: Hardy to 0 degrees.
Sunset zones 3-10, 14-24.

Prefers moist loam.

Botanical Name: Epilobium canum californicum *
Botanical Pronunciation: epp-eh-LOBE-ee-uhm CANE-uhm
Common Name: California Fuchsia
Family Name: Onagraceae
Diseases: None.
Flower: Orange, scarlet orange tubular trumpet shape 1-1/2-3" X 1/2" with no frangrance.
Growth: 12-15" height X 3-4'+ spread of fast to average growth.
Landscape Use: Attracts bees/birds and bank cover w/others.
Light: Sun to part sun on the coast and inland.
Location: Corner of Front and Soquel.
Pest: None.
Problems: Invasive roots under ground.
Propagation: By division and seeds.
Pruning: Remove old branches and clean up as it dies down.
Tolerance: Deer, drought, heat, insect, neglect, smog/dust.
Type: Deciduous perennial ground cover
Water: Dry between.
California Native: Yes
Description: Hardy to 15 degrees.
Sunset zones 5-9, 14-24.

Prefers all types of soil.

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: Alnus rubra
Botanical Pronunciation: ALL-nuss ore-eh-GOAN-ah
Common Name: Red Alder
Family Name: Betulaceae
Diseases: None.
Flower: Catkins male and females green to yellow in April to May 5-6
Growth: 45-75' height x 20-30' spread fast growth in youth.
Landscape Use: Attracts birds, attracts butterflies, bank cover, erosion control and restoration.
Light: Likes all conditions on the coast.
Location: By creek, Ripanian
Pest: Tent caterpiller (control) prune out and aphids (control) increase water.
Problems: Excess litter and invasive/reseeds.
Propagation: By seeds.
Pruning: To remove dead wood.
Tolerance: Disease resistant and neglect.
Type: Deciduous tree that is pyramidal, semi-open, spreading and upright.
Water: Ample moisture.
California Native: Yes
Description: Hardy to 0 degrees.
Sunset zones 3-7, 14-17.

Prefers oist well-drained soil but will tolerate clay.
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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: Aster chilensis
Botanical Pronunciation: AS-ter cheh-LEN-iss
Common Name: California Aster
Family Name: Asteraceae
Diseases: MILDEW (control) Elem.over hear watering
Flower: Daisy, circular in lavender & light purple, 1" dia.+ in late summer - fall.
Growth: 8" x 2" average to fast growth.
Landscape Use: Attracts bees, attracts butterflies, bank cover, container plant, deer proff, erosion control, fire retardant, ground cover, restoration, rock garden, seacoast and shrub mass.
Light: Sun to part sun on the coast and inland.
Location: Entrey Court Hort. Center
Pest: Golphers (control) wire baskets.
Problems: Rooted runners.
Propagation: By cuttings, division, and rhizomer.
Pruning: Dead head flowers, tip prune as needed, will tolerate shearing and prune to ground in late fall.
Tolerance: Deer. drought, lawn irrigation, neglect and seacoast.
Type: Broadleaf evergreen deciduous groundcover that herbaceous perennial.
Water: Monthly/dry season only until establishes (2 dry season) then none in summer,
California Native: Yes
Description: Hardy to: 0 degrees.
Sunset zones: 1-24
EBMUD: 73
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Botanical Name: Rosa californica
Botanical Pronunciation: RO-zah cal-eh-FOUR-beh-kah
Common Name: California Wild Rose
Family Name: Rosaceae
Diseases: None.
Flower: Open single rose in white to deep rose in the spring to summer and fragrant.
Growth: 6-9' heigh X 6'+ spread.
Landscape Use: Attracts birds, infornal hedge, barrier and wild life value.
Light: Sun to Part sun on the coast and inland.
Location: Rear dunes of Sunset State Beach.
Pest: Rose slugs (control) spray with diazinon or hand pick. Aphids (control) rince off with water.
Problems: Invasive.
Propagation: Root divisions, cuttings and seeds (stratify)
Pruning: Trim back canes in late fall for extra vigor the following year.
Tolerance: Sea coast.
Type: Deciduous evergreen shrub that is semi-open, spreading, upright and globular.
Water: Monthly but needs occasional deep watering in summer.
California Native: Yes
Description: Hardy to: 0 degrees.
Sunset zones: All

Botanical Name: Ceanothus gloriosus 'Anchor Bay'
Botanical Pronunciation: see-ah-KNOW-thus / glor-ee-OH-sus
Common Name: Point Reyes ceanothus
Family Name: Rhamnaceae
Diseases: Root rot in wet soils and does not thrive in heat.
Flower: Light blue tight clusters, star shape 1/16' each x 1" cluster in the spring.
Growth: 12-18" heigh X 4-6 '+ spread,fast growing.
Landscape Use: Attracts bees/bird, attracts butterflies, bank cover, erosion control, restoration and sea coast.
Light: Sun on the coast only.
Pest: None.
Problems: Short-lives in gardens.
Propagation: By cuttings and seeds.
Pruning: Tip prune only.
Tolerance: Deer, drought, insect, seacoast and winds.
Type: Broadleaf evergreen subshrub ground cover that is dense, mounding and spreading.
California Native: Yes
Description: Hardy to
Sunset zones 4-6, 17.

Prefers well drained soil.

Botanical Name: Acer negundo
Botanical Pronunciation: a-sdir nauh-GUN-dough
Common Name: Box Elder
Family Name: Aceraceae
Diseases: None.
Flower: Pink in March-April.
Growth: 40-60' height X 35-40' spread fast growing
Landscape Use: Restoration, screen and shade plant.
Light: Sun to part sun on the coast and inland.
Pest: Box elder bug (control) nothing to worry about.
Problems: Reseeds, suckers and weak wooded.
Propagation: By cuttings and seeds.
Pruning: As desired to shape.
Tolerance: Deer, drought, lawn irrigation and neglet.
Type: Deciduous tree that in semi-open, spreading and upright.
Water: Monthly/dry season, only to established and n oen in summer
California Native: Yes
Description: Hardy to 0 degrees.
Sunset zones A2, A3, 1-10, 12-24

Prefers all types of soil.