Colleen Johnsen's California Plants
Class #62: Plant Materials And Design A, Lab #11

Class #62: Plant Materials And Design A, Lab #11


Botanical Name: Cornus x 'Eddie's White Wonder'
Common Name: Hybird Dogwood
Family Name: Cornaceae
Diseases: Verticillium wilt.
Growth: 10-20' tall x 10' across, slow to average growth.
Light: Sun to part shade on the coast.
Pest: None.
Problems: Suckers.
Type: Deciduous tree.
Water: Ample to moist.
California Native: No
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Botanical Name: Cotinus coggygria 'Purpurer'
Botanical Pronunciation: coe-TINE-us co-GIG-ree-ah
Common Name: Purple Smoke Bush
Family Name: Anacardiaceae
Diseases: Verticillium wilt (control) Reduce watering. Powdery mildew (control) No overhead watering.
Flower: Plume-like paniccle pink-purple fading to gray in May to June with no fragrant.
Growth: 12 - 15'+ X 12-15' spread, average growth to fast.
Landscape Use: Background, container plant, screan and shrub mass.
Light: Sun to part shade on the coast and inland.
Location: Filoli and Naman gardens.
Pest: None.
Problems: None.
Propagation: By cuttings and seeds.
Pruning: None required.
Tolerance: Drought, heat, insects, neglect, seacoast and winds.
Type: Deciduous tree that is dense, spreading and upright.
Water: Monthly to none in summer
California Native: No
Description: Hardy to 0 degrees.
Sunset zones 2-24.
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Botanical Name: Geranium incanum
Botanical Pronunciation: jer-RAY-nee-uhm in-CAN-uhm
Common Name: Cranesbill
Family Name: Geraniaceae
Diseases: None.
Flower: 5 single petals overlapping 1" diameter rose - purple in the spring.
Growth: 6' to 1' x 1' fast growing.
Landscape Use: In borders, container plants, fire resistance, ground cover and rock gardens.
Light: Sun to part shade.
Pest: None.
Problems: None.
Propagation: By cuttings and seeds.
Pruning: Cut back every 2-3 years to invigorate.
Tolerance: Drought and heat.
Type: Perennial ground cover.
Water: Dry between / twice a month.
California Native: No
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Botanical Name: Acer palmatum
Botanical Pronunciation: A-sir pal-MAY-tum
Common Name: Japanese Maple
Family Name: Aceraceae
Diseases: Verticillium wilt (control) prune out disease parts & sterilize tools after each use. Fusarium (control)
Flower: Insignificant.
Growth: 6'-25' x 8-30' wide.
Landscape Use: Container plant, lawn tree, rock garden, screen, specimen plant, grove and patio tree.
Light: Sun to heavy shade on the coast, sun to shade inland.
Location: North of 300 & east of Photo Lab.
Pest: Aphids (control) increase water.
Problems: None.
Propagation: By cuttings, layering, seeds and grafting.
Pruning: Remove dead limbs, tip prune as needed and remove. long whips in summer, structural in winter.
Tolerance: Deer and lawn irrigation but no seacoast or winds.
Type: Deciduous tree.
Water: Ample moisture.
California Native: No
Description: Hardy to 0 degree.
Sunset zones: 2-10, 12, 14-24.
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Botanical Name: Betula pendula
Botanical Pronunciation: BET-yew-lah- PEN-due-lah
Common Name: European White Birch
Family Name: Betulaceae
Diseases: Crown rot.
Flower: Catkins, yellow - brown 2 1/2" X 1/4".
Growth: 40-60' high X 8-20' spread.
Landscape Use: Back ground, lawn tree, screen, and grove.
Light: Full sun to shade on coast and inland.
Location: Downtown Santa Cruz.
Pest: Aphids, (control) increase water.
Problems: Short live in gardens, shallow roots, excess litter.
Propagation: Cuttings, seeds and graftings.
Pruning: None required, remove dead limbs and will tolerate heading back.
Tolerance: Deer, lawn irrigation, poor drainage and smog/ust.
Type: Deciduous tree thatis columnar, picturesque, semi-open, spreading, upright and weeping.
Water: Ample Moisture.
California Native: No
Description: Hardy to 0 degrees.
Sunset zones: 1-11, 14-24.
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Botanical Name: Magnolia grandiflora
Botanical Pronunciation: mag-KNOLL-ya gran-deh-FLOOR-eh
Common Name: Southern Magnolia
Family Name: Magnoliaceae
Diseases: Scale.
Flower: Large white tulip shaped 6" X 6" and fragrant in the spring - fall.
Growth: 40-60' wide X 20-40' spread, average growth.
Landscape Use: Container plant, espalier, lawn tree, specimen plant, street tree
Light: Sun on the coast.
Location: Clares median.
Pest: None.
Problems: Pavement buster, drain clogger, and excess litter.
Propagation: Seed and grafting.
Pruning: Remove dead limbs and shape when young.
Tolerance: Deer, drought, heat, insects, lawn irrigation, neglect, smog/dust, winds.
Type: Broadleaf evergreen tree.
Water: Moderate.
California Native: No
Description: Hardy to 15-18 degrees.
Sunset zones: 4-12, 14-24, H1.
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Botanical Name: Nandina domestica
Botanical Pronunciation: nan-DEE-nah doe-MESS-teh-kah
Common Name: Heavenly Bamboo
Family Name: Berberidaceae
Diseases: Powdery mildew.
Flower: Creamy white panicle of 4. 6-12" x3-6" in the spring.
Growth: 6-8' X 2-5'spread, fast growth.
Landscape Use: Background, container plant, cut/dried flower, deer proof, screen, seacoast, shrub mass, and japanese gardens.
Light: Sun to shade on the coast, part sun to shade inland.
Location: North of 300 building.
Pest: Red spider mites (control) increase water and fertilize. Scale (control) remove infected parts. Gophers (control) plant in baskets.
Problems: None.
Propagation: Cutting and division.
Pruning: To control height in spring and to cut out old canes.
Tolerance: Deer, drought, heat, insect resistant, lawn irrigation, neglect, seacoast and winds.
Type: Broadleaf evergreen shrub.
Water: Moderate to none in summer.
California Native: No
Description: Hardy to 5 - 10 degrees.

Sunset zones:3-24, H1, H2.
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Botanical Name: Cornus florida
Common Name: Eastern Dogwood
Family Name: Cornaceae
California Native: Yes
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Botanical Name: Olea europaea
Botanical Pronunciation: OLE-ee-ah yer-OH-pea-ah
Common Name: European Olive
Family Name: Oleaceae
Diseases: Verticillium wilt.
Flower: Panicle 1/8" pinicle indiv. 2-3" X2" in spring.
Growth: 30-50' X 20-30'+ fast in youth to average.
Landscape Use: Backgrounds, container plant, espalier, hedges, lawn tree, sea coast, shade, specimen and wind break.
Light: Sun on the coast and inland.
Location: East of 700; Circular planter east of 300.
Pest: Scale.
Problems: Allergen, suckers at base, excess litter with fruit skins and can be a fire hazard.
Propagation: By cuttungs and grafting.
Pruning: Structural thinning for form, takes shearing and break off sucker.
Tolerance: Deer, drought, heat, insects/disease resistant, lawn irrigation, neglect, poor drainage, seacoast, smog/dust and wind.
Type: Broadleaf evergreen tree.
Water: Tolerates ample moisture but dry between to none in summer.
California Native: No
Description: Hardy to 10-15 degrees,

Sunset zones: 8-9, 11-24, H1, H2.

Botanical Name: Feijoa sellowiana
Botanical Pronunciation: fay-ZJOE-ah sell-oh-ee-ON-ah
Common Name: Pineapple Guava
Family Name: Myrtaceae
Diseases: None
Flower: pink/white five fleshy petals 1-2
Growth: 15-25' x 15-20' average growth.
Landscape Use: Attracts bird and bees, background container plant, hedge, screen, sea coast, shrub mass wind break and a specimen.
Light: Sun to part shade on the coast and inland.
Pest: None.
Problems: None.
Propagation: By cuttings in summer and seeds.
Pruning: As desired. Takes shearing and prune in late spring.
Tolerance: Drought, wind, smog, sea coast, heat, neglect, lawn irrigation and the desert.
Type: Broadleaf evergreen small tree or shrub.
Water: Monthly.
California Native: No
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Botanical Name: Asarum caudatum
Botanical Pronunciation: Ah-CZAR-uhm kaw=DAY-tum
Common Name: Wild Ginger
Family Name: Aristolochiaceae
Diseases: None.
Flower: Bell shaped with 3 'tails' maroon (hidden under leaves) 1" - 1 1'2" in the spring
Growth: 6" average growth.
Landscape Use: Foliage
Light: Part shade to full shade on the coast and full shade inland.
Location: Carothers residence
Pest: Snails.
Problems: Invasive but spreads slowly.
Propagation: By divisions.
Pruning: Perhaps prune back to remove snails once a year.
Tolerance: Drought, deer and lawn irrigation.
Type: Broadleaf evergreen, herbaceous, perennial groundcover that is dense or semi-open, mat forming back cover, fire retardant, ground cover with bold texture.
Water: Ample moisture to Moderate.
California Native: Yes
Description: Hardy to 15-20 degrees.
Sunset zones 4-6, 14-24.

MENTION IN LAB 10
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Botanical Name: Corylus cornuta californica
Botanical Pronunciation: CORE-nuss / core-KNEW-tah / cal-eh-FOUR-neh-kah
Common Name: California Hazelnut
Family Name: Betulacee
Diseases: None.
Flower: Greenish yellow catkins (male) 1/4
Light: Full sun to part shade both on the coast and inland.
Pest: None.
Problems: None.
Propagation: By seeds and layering.
Pruning: To control size as desired.
Type: Deciduous shrub with tiered, arching deciduous multi-trunked shrub with soft leaves.
Water: Moderate.
California Native: Yes
Description: MENTION IN LAB 10
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Botanical Name: Liquidambar styraciflua
Botanical Pronunciation: Lick-quid-AM-bar sty-rass-eh-FLUE-eh
Common Name: Liquidambar - sweet Gum
Family Name: Hamamelidaceae
Diseases: None
Flower: Insignificant.
Growth: 40-80' X 15-30' spread, fast to average.
Landscape Use: Background, deer resistant, screen, speciment plant and climbable.
Light: Sun to part sun on the coast and inland.
Pest: Tent caterpillars (control) pruning out and destroy, aphids (control) by evaluate watering. Squirrels don't feed.
Problems: Drain cloggers, excess litter, pavement buster, shallow rooted suckers and week wooded branches breakage very common.
Propagation: By seeds and grafting.
Pruning: Corrective pruning.
Tolerance: Deer, heat, lawn irrgation, poor drainage and smog/dust.
Type: Deciduous tree that is dense, oval, semi-open, spreading and upright.
Water: Ample, none in summer.
California Native: No
Description: Hardy to 0 degrees.

Sunset zones: 3-9, 14-24.