Monthly Archives: December 2015

Picea sitchensis (N)

Picea sitchensis (N)

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Common name: Sitka spruce

Family name: Pinaceae

USDA Hardiness Zone:  6

Mature height and spread:  10-20m; 8-10m

Form: evergreen conifer

Water use: medium

Soil requirements: moist to wet, sandy soil

Leaf arrangement:  one side white blue and one side light green, sharp point, stiff

Flower/cone/fruit description(s):  cylindrical, 6-10cm

Suitable uses:  landscape specimen

Quick ID description:  white blue, light green, sharp, stiff; cylindrical

Photographs:

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http://oregonstate.edu/dept/ldplants/pisi.htm

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Picea pungens

Picea pungens

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Common name: blue spruce

Family name: Pinaceae

Useful cultivars and selections:  ‘Fat Albert’ ‘Hoopsii’ ‘Montgomery’ ‘Glauca Globosa’ ‘Walnut Glen’ ‘Baby Blueeeyes’ ‘Bacheri’

USDA Hardiness Zone:  3

Mature height and spread:  10-20m; 3-6m

Form: evergreen conifer

Water use: medium

Soil requirements: average, acidic, medium moisture, well-drained soils; full sun.

Leaf arrangement:  spreading all around the stem, stiff, 2-3cm, stomatal line on both side, sharp point

Flower/cone/fruit description(s):  cylindrical, 5-10cm

Limitations: more drought tolerant than other spruce

Suitable uses:  landscape specimen

Quick ID description:  stiff, sharp, stomatal line; cylindrical

Photographs:

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http://oregonstate.edu/dept/ldplants/pipug.htm

Picea breweriana

Picea breweriana

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Common name: weeping spruce

Family name: Pinaceae

USDA Hardiness Zone:  6-8

Mature height and spread:  15-24m; 5-8m

Form: evergreen conifer

Water use: medium

Soil requirements: well-drained, neutral to slightly acidic soil; full sun

Leaf arrangement:  flattened to rounded triangular needles, 2-3cm, 2 stomatal lines

Flower/cone/fruit description(s):  hang down, oblong, 6-15cm, smooth

Suitable uses:  mid-sized gardens

Quick ID description:  needle; hang down, oblong

Photographs:

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http://oregonstate.edu/dept/ldplants/pibr.htm

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Juniperus communis (N)

Juniperus communis (N)

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Common name: common juniper

Family name: Cupressaceae

Useful cultivars and selections:  ‘Effusa’ ‘Gold Cone’ ‘Compressa’ ‘Blue Stripe’

USDA Hardiness Zone:  2-7

Mature height and spread:  6m; 4m

Form: evergreen conifer

Water use: medium

Soil requirements: average, medium moisture, well-drained soil; full sun

Leaf arrangement:  pointy sharp needles; only awl-shaped needles, white band on inside of leaf; 3-15mm

Flower/cone/fruit description(s):  globose, 12mm

Suitable uses:  rock garden plant

Quick ID description:  awl-shaped needles, white band; globose

Photographs:

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http://oregonstate.edu/dept/ldplants/juco.htm

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https://gobotany.newenglandwild.org/species/juniperus/communis/

 

Cryptomeria japonica Elegans Group (N)

Cryptomeria japonica Elegans Group (N)

7

Common name: Japanese cedar

Family name: Cupressaceae

USDA Hardiness Zone:  6

Useful cultivars and selections: ‘Elegans Aurea‘ ‘Elegans Compacta’ ‘Elegans Nana’ ‘Elegans Variegata’ ‘Elegans Viridis’

Mature height and spread:  2m; 1.5m

Form: evergreen conifer

Water use: medium

Soil requirements: moist, rich, acidic, well-drained soils; full sun

Leaf arrangement:  soft feathery, spiral; green in summer but rich brownish red in winter

Flower/cone/fruit description(s): cones smaller than those of species, cone cluster on the tip of the brunch

Limitations: give space to show off; damage by wet snow

Suitable uses:  rock garden plants

Quick ID description:  soft feathery

Photographs:

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http://oregonstate.edu/dept/ldplants/crjae.htm

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Cryptomeria japonica Elegans Group (N)

Cryptomeria japonica Elegans Group (N)

7

Common name: Japanese cedar

Family name: Cupressaceae

USDA Hardiness Zone:  6

Useful cultivars and selections: ‘Elegans Aurea‘ ‘Elegans Compacta’ ‘Elegans Nana’ ‘Elegans Variegata’ ‘Elegans Viridis’

Mature height and spread:  2m; 1.5m

Form: evergreen conifer

Water use: medium

Soil requirements: moist, rich, acidic, well-drained soils; full sun

Leaf arrangement:  soft feathery, spiral; green in summer but rich brownish red in winter

Flower/cone/fruit description(s): cones smaller than those of species, cone cluster on the tip of the brunch

Limitations: give space to show off; damage by wet snow

Suitable uses:  rock garden plants

Quick ID description:  soft feathery

Photographs:

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http://oregonstate.edu/dept/ldplants/crjae.htm

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Chamaecyparis obtusa

Chamaecyparis obtusa

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Common name: Japanese cypress

Family name: Cupressaceae

Useful cultivars and selections:  ‘Nana Gracilis’ ‘Verdon’ ‘Densa’

USDA Hardiness Zone:  4

Mature height and spread:  8m; 7m

Form: evergreen conifer

Water use: medium

Soil requirements: average, medium moisture, well-drained soil; full sun to part shade

Leaf arrangement:  short, dense, closely pressed; lateral pair are much larger than the facial leaves; dark green above, light green below

Flower/cone/fruit description(s):  peltate, valvate scales; spiny in the center of the scale; 8mm diam

Limitations: avoid wet, poorly-drained soils; shelter from wind

Suitable uses:  specimen

Quick ID description:  light green below; peltate, valvate, spiny in the center

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Photographs: http://oregonstate.edu/dept/ldplants/chobg.htm

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Cupressus nootkatensis Pendula Group (N)

Cupressus nootkatensis Pendula Group (N)

5

Common name: weeping Nootka cypress

Family name: Cupressaceae

USDA Hardiness Zone:  5

Mature height and spread:  15-22m; 7-10m

Form: evergreen conifer

Water use: medium

Soil requirements: acidic, well-drained

Leaf arrangement:  weeping, overlapping, decurrent, alternate but scale are opposite; facial scale and lateral scale each scale 90°; strong smell

Flower/cone/fruit description(s):  spiky ball

Limitations: spruce mite, twig blight, root rot, needle blight

Suitable uses:  specimen plant

Quick ID description:  weeping; valvate, peltate; fleshy

Photographs:

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https://plantdatabase.kpu.ca/plant/printableSummary/1609

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Abies koreana

Abies koreana

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Common name: Korean fir

Family name: Pinaceae

Useful cultivars and selections:  ‘Aurea’ (yellow needles) ‘Horstmann’s Silberlocke’ ‘Prostrate Beauty’ ‘Silver Snow’

USDA Hardiness Zone:  5

Mature height and spread:  4.5-9m; 3-5m

Form: evergreen conifer (slow growing)

Water use: medium

Soil requirements: rich, consistently moist, slightly acidic, well-drained soils; full sun to part shade

Leaf arrangement:  crowded needles, whitish stomatal bands below

Flower/cone/fruit description(s): erect, ovoid, imbricate, 4-7cm; purple cone in spring

Limitations: avoid wet soils

Suitable uses:  specimen fir; ornamental yard tree

Quick ID description:  slow growing, purple cone (in spring); pleasant smell

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Photographs: https://commons.wikimedia.org/wiki/File:Abies_koreana_cone.jpg

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Abies lasiocarpa (N)

Abies lasiocarpa (N)

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Common name: Rock Mountain fir

Family name: Pinaceae

USDA Hardiness Zone:  4

Mature height and spread:  30m; 4m

Form: evergreen conifer, medium size to large trees

Water use: moist

Soil requirements: good soil, sun or partial shade

Leaf arrangement:  point forward; curving upward on upper twigs

Flower/cone/fruit description(s):  erect, ovoid, imbricate, 4-10cm

Suitable uses:  structural purposes; paper manufacture; Christmas tree

Quick ID description:  point forward; erect; imbricate

Photographs:

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http://oregonstate.edu/dept/ldplants/abla.htm

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 http://web.unbc.ca/~fsty201/PINACEAE/Abies%20lasiocarpa-spring%20image-cones.jpg

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