Monday 7 October 2013

Week 6 - Oct. 7 - 11

Latin Name: Weigelia florida
Common Name: weigelia
Family: Caprifoliaceae
Origin: East Asia
Tree/Shrub/Herb: Deciduous shrub
Form: Regular, round
Habit: Irregular arching stems
Buds: Opposite
Leaves: Ovate, finely toothed, pointed apex
Flowers: Pink, tubular, 5 petals, radially symmetric 
Fruit: Seeds in cigar shaped capsules, green to brown
Stem/Bark: Reddish new stem growth
Cultural Requirements: Moist soil, not great in very dry soils
Landscape Uses: Size, colour, foliage
Notes: Flowers in June/July and through to fall



Latin Name: Hydrangea anomala subsp. petiolaris
Common Name: climbing hydrangea
Family: Hydrangeaceae
Origin: Japan and China
Tree/Shrub/Herb: Deciduous liana
Form: Climbing, flattened
Habit: Ascending shoots
Buds: Opposite
Leaves: Ovate, finely toothed, in whorls at nodes
Flowers: Sterile florets with 4 petals, fertile central flowers in pannicles
Stem/Bark: Red stems, exfoliating bark
Cultural Requirements: Prefers moist soils, doesn't need too much attention
Landscape Uses: Covering vertical surfaces
Notes: Climbs with aerial roots

Latin Name: Viburnum plicatum var. tomentosum
Common Name: double-file viburnum
Family: Adoxaceae
Origin: China, Korea Japan, Taiwan
Tree/Shrub/Herb: Deciduous shrub
Form: Upright, regular
Habit: Multiple shoots from base
Buds: Opposite
Leaves: Ovate, pointed apex, underside tomentose
Flowers: Corymbose, sterile florets around fertile florets, white
Stem/Bark: Greyish bark
Cultural Requirements: Needs moist soil, full sun to semi shade
Landscape Uses: Large spaces (can grow to 12ft tall and 10ft wide)
Notes: Affected by viburnum leaf beetle

Latin Name: Euonymus japonicus
Common Name: Japanese euonymus
Family: Celastraceae
Origin: Japan, Korea, China
Tree/Shrub/Herb: Evergreen shrub
Form: Upright, rounded
Habit: Many secondary branches from base
Buds: Opposite
Leaves: Verigated leaves, finely toothed, spatulate
Flowers: Insignificant flowering
Fruit:
Insignificant fruiting
Stem/Bark: Green stems with brownish patterning
Cultural Requirements: Moist soils, full sun
Landscape Uses: Border shrub
Notes: Can grow to a maximum of 7-8ft


Latin Name: Stewartia pseudocamellia
Common Name: Japanese stewartia
Family: Theaceae
Origin: Japan and Korea
Tree/Shrub/Herb: Deciduous tree
Form: Upright, loosely vase-shaped
Habit: Upward pointing secondary branches
Buds: Alternate, flattened shape, divergent from stem
Leaves: Ovate, finely serrated, pointed apex
Flowers: White camelia-like flowers 
Fruit: Greenish-red seed pods, provide interest in winter
Stem/Bark: Greyish-brown exfoliating bark, zig-zag twig growth
Cultural Requirements: Don't like heat and dryness, prefer some shade
Landscape Uses: Garden or boulevard trees
Notes: Flowers in June/July

Latin Name: Tilia cordata
Common Name: little leaf linden
Family: Tiliaceae
Origin: Europe, Western Asia
Tree/Shrub/Herb: Deciduous tree
Form: Upright, rounded pyramid
Habit: Cascading secondary branches
Buds: Opposite, rounded, red
Leaves: Chordate base, rounded shape
Flowers: Strong scent when flowering 
Fruit: Pendulous seed with bract
Stem/Bark: Greyish bark
Cultural Requirements: Well drained soil, full sun
Landscape Uses: Street trees
Notes: Becomes heavily infested with aphids

Latin Name: Tilia americana
Common Name: American linden
Family: Tiliaceae
Origin: Eastern North America
Tree/Shrub/Herb: Deciduous tree
Form: Upright, rounded
Habit: Loose upright branches
Buds: Opposite, rounded, red
Leaves: Less chordate base than T. cordata, smaller size than T. cordata, rounded shape, one side larger than the other
Flowers: Strong scent when flowering 
Fruit: Pendulous seed with bract
Stem/Bark: Greyish bark
Cultural Requirements: Well drained soil, full sun
Landscape Uses: Street trees
Notes: Becomes heavily infested with aphids

Latin Name: Physocarpus capitatus
Common Name: ninebark
Family: Rosaceae
Origin: Western North America
Tree/Shrub/Herb: Deciduous shrub
Form: Upright, rounded, vaselike
Habit: Vertical shoots which become arching with age
Buds: Alternate
Leaves: 3-lobed
Flowers: Corymbose raceme of white flowers
Stem/Bark: Bark peels in strips
Cultural Requirements: Don't do well in very dry soil, prefer moist soil, full sun to shade
Landscape Uses: Form, foliage
Notes: This is one of a few native species which are easy to grow and fit well into ornamental gardens

Latin Name: Robinia pseudoacacia
Common Name: black locust
Family: Fabaceae
Origin: Southeastern United States
Tree/Shrub/Herb: Deciduous tree
Form: Upright, rounded top
Habit: Awkward when young, windswept with age
Buds: Alternate
Leaves: Pinnately compound, oval, entire margin
Stem/Bark: Greyish-brown bark with vertical fissures, thorny stems
Cultural Requirements: Moist, well drained soils
Landscape Uses: Garden trees
Notes: Attractive yellowish-green colour, branches become brittle with age

Latin Name: Sambucus nigra f. porphyrophylla
Common Name: elderberry
Family: Adoxaceae
Origin: Europe
Tree/Shrub/Herb: Deciduous shrub
Form: Upright, vaselike
Habit: Multiple stems from base
Buds: Opposite
Leaves: Bipinnately compound, dark purple, deep lobes
Flowers: Pink corymbs which flower in mid-summer 
Fruit: Purple berries
Stem/Bark: Brown bark with prominent lenticels
Cultural Requirements: Don't prefer heat or very dry soil, prefer moist and well drained soil
Landscape Uses: Dark colour as contrast
Notes: Susceptible to black aphids

Latin Name: Pseudotsuga menziesii
Common Name: Douglas fir
Family: Pinaceae
Origin: Western North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright, dominant leader
Habit: Spirally arranged primary branching along main trunk
Leaves: Spirally arranged pointed needles along stems
Cones: Long, brown cones with distinct "tongue-shaped" bracts
Stem/Bark: Greyish-brown bark which becomes deeply furrowed with age
Cultural Requirements: Intolerant of very wet sites
Landscape Uses: Park trees
Notes: This is a very valuable timber tree in BC's economy


Latin Name: Tsuga heterophylla
Common Name: western hemlock
Family: Pinaceae
Origin: Western North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright, dominant leader
Habit: Upward pointing dominant branching
Leaves: Short needles on two sides of stem, two lines of white stomata on underside
Cones: Small brown woody cones
Stem/Bark: Greyish-brown bark with an almost purplish hue
Cultural Requirements: Prefer shade, moist organic soils, often grow on nurse logs
Landscape Uses: Park trees
Notes: Not a very valuable timber tree in BC



Latin Name: Abies grandis
Common Name: grand fir
Family: Pinaceae
Origin: Western North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright, single dominant leader
Habit: Upward sweeping primary branches
Leaves: Long, flattened needles, two lines of white stomata on underside
Cones: Upright, brown, woody, 6-12cm with 100-150 scales
Stem/Bark: Platy greyish bark, quite smooth compared to P. menziesii
Cultural Requirements: Grows from sea level to 1800m, moist organic soil
Landscape Uses: Park trees
Notes: Reasonable timber value


Latin Name: Thuja plicata
Common Name: western red cedar
Family: Cupressaceae
Origin: Western North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright, single dominant leader
Habit: Upward sweeping branches
Leaves: Flattened, scaly, multi-ranked leaves
Cones: Very small brown cones in clusters 
Stem/Bark: Reddish bark that peels in long vertical strips
Cultural Requirements: Moist soils are necessary
Landscape Uses: Park trees, hedging
Notes: The trunks flare at the base



Latin Name: Juniperus communis
Common Name: common juniper
Family: Cupressaceae
Origin: Temperate Northern Hemisphere
Tree/Shrub/Herb: Coniferous shrub
Form: Often spreading, sometimes upright
Habit: Many primary branches from base
Buds: Whorled in 3s along stem
Leaves: Awl shaped, pointed tips
Cones: Arils
Stem/Bark: Brownish bark
Cultural Requirements: Very hardy, will grow in very dry and inorganic soils, intolerant of shade
Landscape Uses: Hedging
Notes: The most widely distributed woody plant in the world


Latin Name: Pinus contorta subsp. contorta
Common Name: shore pine
Family: Pinaceae
Origin: Western North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright, windswept
Habit: Contorted branches, multiple leaders
Leaves: Fascicles of 2, long pointed needles
Cones: Groupings of small male cones, larger female cones 
Stem/Bark: Greyish-brown, lightly furrowed
Cultural Requirements: Average, moist soil
Landscape Uses: Park trees
Notes: Adapted to grow in fire prone ecosystems

Latin Name: Glyptostrobus pensilis
Common Name: Chinese swamp cypress
Family: Cupressaceae
Origin: SE China
Tree/Shrub/Herb: Coniferous tree
Form: Upright, conical
Habit: Lower branches spreading, upper branches more erect
Leaves: Light green, 2-ranked needles
Cones: Female cones pear shaped, 12-18mm long, woody
Stem/Bark: Greyish-brown, vertically fissured
Cultural Requirements: Prefer low, wet riparian areas
Landscape Uses: Garden trees, close to water features
Notes: Has "breathing" roots like Taxodium, the plant is quite aromatic when crushed

Latin Name: Taiwania cryptomerioides
Common Name: coffin tree
Family: Cupressaceae
Origin: East Asia
Tree/Shrub/Herb: Coniferous tree
Form: Upright, conical
Habit: Upward sweeping branches
Leaves: Spiky, bluish-green needles
Cones: Female cones 15-25mm long, brown, woody
Stem/Bark: Brown, fissured
Cultural Requirements: Prefers moist sites
Landscape Uses: Rare garden tree
Notes: Prized for its use as lumber for coffins

Latin Name: Cephalotaxus harringtonia
Common Name: Japanese plum yew
Family: Cephalotaxaceae
Origin: Japan
Tree/Shrub/Herb: Coniferous tree
Form: Upright
Habit: Shrublike
Leaves: Flattened, prickly green needles, 2-ranked, two stomatal bands on underside
Flowers: Dioecious; cream coloured, globular shaped male flowers; female flowers knob-like and globose
Fruit: Obovoid, 1.5cm X 2.5cm, green turning brown when ripe
Stem/Bark: Brown bark with vertical striations
Cultural Requirements: Moist, sandy, well drained soils
Landscape Uses: Garden tree
Notes:New shoots remain green for 3 years

Latin Name: Cupressus arizonica
Common Name: Arizona cypress
Family: Cupressaceae
Origin: SW North America
Tree/Shrub/Herb: Coniferous tree
Form: Upright
Habit: Upward sweeping primary branches
Leaves: Scaly, multi-ranked leaves
Cones: Roundish/boxy female cones, male pollen flowers
Stem/Bark: Platy greyish-brown bark
Cultural Requirements: Dry, inorganic soil, full sun
Landscape Uses: Large garden tree, park trees
Notes: Doesn't always perform very well in our climate

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