Category Archives: Horticulture Reports

Southern Oregon Native: Cercocarpus montanus

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Plant Name:  Cercocarpus montanus
Common name:  Alderlead/Silverleaf Mountain Mahogany
Plant Type:  Evergreen Shrub or Small Tree
Plant Height: 8’ – 20’
Plant Width:  4’ – 8’
Bloom Time:  April – May
Flower Color: Non-showy Flowers followed by Feathery, Silver-White Fruit. Small flowers appear red when they first open, then turn whitish-yellow 
Exposure:  Sun; Tolerates Shady Sites.
Soil Requirements: Well-Drained
Water Need:  Low to Medium
Firewise: YES
Attributes: Nitrogen Fixer; Attracts Butterflies/Moths; Tolerates Drought; Bark is Dark Red Mahogany Color; Good Fall color.
Uses:  Erosion Control; Hedge
Native to:  SW Oregon – California – Rockies
Oregon Native:  YES
USDA Hardiness Zone:  5 – 10

Report by: Viki Ashford, AGC Member, Master Gardener

Photos by: Nadiatalent, Public domain, via Wikimedia Commons

Posted by: Carlotta Lucas, AGC Board Member

Oregon Native: Dutchman’s Breeches

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Plant Name:  Dicentra cucullaria
Common name:  Dutchman’s Breeches
Plant Type:  Herbaceous Perennial
Plant Height:  .5’ – 1’
Plant Width:  .5’ – 1’
Bloom Time:  March – May
Flower Color:  2 Outer Petals are White; 2 Inner Petals are Yellow
Exposure:  Part Shade to Full Shade
Soil Requirements: Rich, Moist, Humusy, Well-Draining Soil; Tolerates Clay Soil.
Water Need:  Medium
Firewise: YES
Attributes: Showy Flowers; Nectar Attracts Bees.
Uses:  Native & Wildflower Gardens; Shade Garden.
Note:  Some Susceptibility to Aphid Infestation; Plant Goes Dormant in Early Summer; All Parts Poisonous.
Native to:  Central & Eastern North America, Idaho, Oregon, Washington
Oregon Native:   YES
USDA Hardiness Zone:  3 – 7

Report by: Viki Ashford

Photo Credit: Biosthmors, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

Posted by: Carlotta Lucas, AGC Board Member

Oregon Native: Kinnikinnick

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Plant Name:  Archtostaphylos uva ursi
Common name:  Kinnikinnick
Plant Type:  Trailing Evergreen Shrub
Plant Height:  6” – 12”
Plant Width:  10’
Bloom Time:  March – June
Flower Color:  Pink to White
Exposure: Sun to Partial Shade
Soil Requirements: Rocky, Sandy, Acidic Soil
Water Need:  Low
Fire Resistant: YES
Attributes: Red Berries Succeed Through Winter; Reddish-Purple Fall Color; Papery, Reddish, Exfoliating Bark; Attracts Butterflies, Hummingbirds, & Other Birds; Larval Host for Butterflies & Moths; Drought Tolerant; Deer Resistant
Uses:  Large Scale Groundcover with Year-round Interest; Control Soil Erosion; Border Margin; Native Plant Garden; Rock Garden
Note:  Slow Growing; Trailing Stems Send Out Small Roots;
Native to: Almost All of North America
Oregon Native: YES
USDA Hardiness Zone:  2 – 6

Report by: Viki Ashford, AGC Member, Master Gardener

Posted by: Carlotta Lucas

Horticulture Report: Ajuga reptans

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Plant Name: Ajuga reptans
Common name:  Carpet Bugleweed
Plant Type:  Herbaceous Perennial
Plant Height:  .5’ – .75’
Plant Width:  .5’ – 1’
Bloom Time:  May to June
Flower Color:  Blue
Exposure: Full Sun to Part Shade
Soil Requirements: Moist/Humusy/Well-Drained Soil.
Water Need:  Medium
Firewise: Yes; locate 30’+ from home
Attributes: Showy Flower/Colorful Leaves; Deer Resistant; Attracts Bees, Hummingbirds, Songbirds
Uses:  Groundcover; Containers; Rock Gardens; Spring Bulb Cover.
Note:  Cut Back to Ground after Flowering; Spreads by Stolons.
Native to:  Europe, North Africa, SW Asia
Oregon Native:  NO
USDA Hardiness Zone:  3 – 10

Report by: Viki Ashford

Posted by: Carlotta Lucas

Clemson Variegated Silverberry

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Plant Name:  Elaeagnus pungens ‘Clemson Variegated’
Common name:  ‘Clemson Variegated’ Silverberry; Thorny Olive; Silver Thorn
Plant Type:  Evergreen Shrub
Plant Height:  6’ – 10’
Plant Width:  6’ – 10’
Bloom Time:  October – November
Flower Color:  White Flowers followed by Red Fruit
Exposure: Full Sun to Part Shade
Soil Requirements: Tolerates Wide Range of Soils with Good Drainage.
Water Need:  Regular
Firewise: Medium Flammability
Attributes: Deer Resistant; Fragrant, Showy Flowers; Attracts Songbirds & Bees; Drought Resistant; Winter Interest; Variegated Leaves of Green, Gold, Yellow
Uses:  Background Plant; Wind Break; Screen.
Note:  Thorns
Native to:  China & Japan
Oregon Native:  NO
USDA Hardiness Zone:  7 – 11

Report by: Viki Ashford, AGC Member & Master Gardener

Photo from: Oregon State University Dept. of Horticulture https://landscapeplants.oregonstate.edu/node/2132

Posted by: Carlotta Lucas