Colleen Johnsen's California Plants
Class #62: Plant Materials And Design A, Lab #7

Class #62: Plant Materials And Design A, Lab #7


Botanical Name: Prunus cerasifera
Botanical Pronunciation: PRUNE-us sarah-SIF-er-ah
Common Name: Purple Leaf Plum
Family Name: Rosaceae
Diseases: Shot hole fungus (control) prune effected areas. Fireblight and crown rot (control) restrict water in clay soil.
Flower: White to pink in late winter.
Growth: Fast, 20' x 25' spread.
Landscape Use: Attracts bees, cut/dried flowers, deer proof, lawn tree, screen, shade plant, specimen tree, and focal point.
Light: Sun on the coast and inland.
Location: Capitola Mall parking lot.
Pest: Aphids, spider mites, scale and borers (control) increase water.
Problems: Short live 25 years, suckers & excess litter.
Propagation: By cuttings, seeds and grafting.
Pruning: Remove dead limbs and shape when young.
Tolerance: Deer, drought, heat, lawn irrigation, neglect but needs to be pruned for structure, and smog/dust.
Type: Deciduous tree that is dense, round, semi-open, spreading and upright.
Water: Moderate to dry between.
California Native: No
Description: Hardy to 0 degrees.
Sunset zone: 3-22.
Click on a picture to enlarge it.
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Botanical Name: Pyrus calleryana 'Bradford'
Botanical Pronunciation: pie-RUSS kah=LARRY-on-ah
Common Name: Callery Pear
Family Name: Rosaceae
Diseases: Fungal leaf spot and fire blight.
Flower: White to off white, five petal rose like.
Growth: 50' X 30' spread, average to fast growth.
Landscape Use: Attracts bees/birds, cut/dried flowers, espaliers, shade tree, specimen plant, street tree, and parking lot tree.
Light: Sun on coast and inland.
Location: Capitola Mall parking lot.
Pest: Aphids (control) increase water.
Problems: Weak wooded in East and banned in Santa Clara.
Propagation: By budding grafts.
Pruning: Thin to shape.
Tolerance: Drought, heat, lawn irrigation and smog/dust.
Type: Deciduous semi-tree that is dense, oval, semi-open, spreading and upright.
Water: Dry between.
California Native: No
Description: Hardy to -25 degrees.
Sunset zones: 2-9,14-21
Click on a picture to enlarge it.
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Botanical Name: Laurus nobilis
Botanical Pronunciation: LORE-us NO-bill-us
Common Name: Grecian laurel
Family Name: Lauraceae
Diseases: None.
Flower: Cream to yellow, single flat head.
Growth: 15-40' X 15-25'spread, average to slow growth.
Landscape Use: Background, container plant, deer proof, hedge, screen, shade plant, specimen plant, street tree, windbreak, patio tree in container.
Light: Sun to part shade on coast and inland.
Location: Southwest corner of Sears.
Pest: Aphids, scale (control) increase irrigation. Laurel psyllid (control) use 'Saratoga'.
Problems: None.
Propagation: Cuttings and seeds.
Pruning: As desired.
Tolerance: Deer, drought, heat, neglect, seacoast, smog/dust, and winds.
Type: Broadleaf evergreen tree or shrub, dense, oval, round spreading and upright.
Water: Moderate to dry between.
California Native: No
Description: Hardy to 20 degrees.
Sunset zones:5-9,12-24 H1, H2
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Botanical Name: Melaleuca linariifolia
Botanical Pronunciation: mel-ah LEW-kah lynn-air-eh-FOAL-ee-ah
Common Name: Flaxleaf Paperbark
Family Name: Myrtaceae
Diseases: None.
Flower: Spikes of staminate flowers, in white. Blooms in the summer.
Growth: 20-30' X 10-20' spread, average to fast growth.
Landscape Use: Attracts bees/birds, lawn tree, screen, seacoast, shade tree, specimen plant, street tree, and windbreak.
Light: Sun on both coast and inland.
Location: 41st. Avenue
Pest: None.
Problems: None.
Propagation: By seeds.
Pruning: As desired.
Tolerance: Deer, drought, heat, insects, lawn irrrigation, neglect, poor drainage, seacoast, smog/dust, and winds.
Type: Broadleaf evergreen tree that is dense, round, spreading, and upright.
Water: Only until established then none in summer.
California Native: No
Description: Hardy to 20-30 degrees.
Sunset zones:9,13-24 & H1
Click on a picture to enlarge it.
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Botanical Name: Platanus racemosa
Botanical Pronunciation: PLAH-tah-nuss race-eh-MOCE-ah
Common Name: California Sycamore
Diseases: Sycamore scale, anthracnose and powdery mildew.
Flower: Insignificant.
Growth: 50-80' X 20-50' fast growth.
Landscape Use: Background, lawn tree, pond/stream, restoration, screen, shade tree, and riparian.
Light: Sun to part shade on the coast and inland..
Location: Capitola road edge of parking lot, Capitola Mall.
Pest: Mites, leaf miner and red spiders.
Problems: Excess litter and drain clogger.
Propagation: By cuttings and seeds.
Pruning: In winter to shape.
Tolerance: Deer, heat, lawn irrigation, poor drainage and winds.
Type: Deciduous tree that is open, picturesque, spreading and upright.
Water: Ample moisture to dry between.
California Native: No
Description: Hardy to 0 degrees.
Sunset zone: 4-24.
Click on a picture to enlarge it.
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Botanical Name: Ceratonia siliqua
Botanical Pronunciation: sair-ah-TONE-ee-ah sih-LEE-kwa
Common Name: Carob Tree
Family Name: Fabaceae
Diseases: Crown rot.
Flower: Yellow spikey cluster.
Growth: 25-50' height x 25-40' spread, average to fast growth.
Landscape Use: Espalier, hedge, lawn tree, screen, specimen plant, and edible pods.
Light: Sun on the coast and inland.
Location: Street tree west of Bank of the West.
Pest: Aphids, (control) increase water.
Problems: Excess litter with the female tree, pavement buster.
Propagation: By seeds.
Pruning: Can be sheared as in last picture or pruned only for structure as in first picture.
Tolerance: Drought, heat, insects, lawn irrigation, neglect and winds.
Type: Broadleaf evergreen tree or large shrub that is dense, round, spreading and upright..
Water: Moderate to none in summer.
California Native: No
Description: Hardy to 15-18 degrees.
Sunset zones:9,13-16,18-24.
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Botanical Name: Fraxinus oxycarpa 'Raywood'
Botanical Pronunciation: FRAX -in-us ox-eh-CAR-pah
Common Name: Raywood Ash
Family Name: Oleaceae
Diseases: Sooty mold and verticillium.
Flower: Insignificant.
Growth: 25 - 40' X 25' spread, fast growing
Landscape Use: Good in zone 3-9, 14-24 for screen, shade tree, specimen tree, street tree and great in parking lots.
Light: Sun on the coast and inland.
Location: Capitola Mall Parking lot.
Pest: Aphids (control) increase water. Ash whitefly (control) wasp and yellow sticky traps. Ash borer to control parastic nematode.
Problems: Mystery die out in center- botryosphaeria.
Propagation: By grafting.
Pruning: As desired to develop and to remove dead limbs.
Tolerance: Will tolerate deer, drought, heat, neglect, smog/dust and winds.
Type: Deciduous tree with and oval, semi-open upright shape.
Water: Monthly
California Native: No
Description: Hardy to 0 degrees.
Sunset zones 2-9, 12-24.
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