Horticulture Report: Rock Rose

Posted on October 4, 2021 by Ashland Garden Club

Plant Name: Helianthemum nummularium

Common name: Sun Rose or Rock Rose

Plant Type: Herbaceous Perennial

Plant Height: 8” – 10”

Plant Width: 12” – 16”

Bloom Time: June – August

Flower Color: Red, Pink, Yellow, Orange, Multicolored

Exposure: Full Sun

Soil Requirements: Dry, Alkaline, Rocky, Sandy Soil;

Water Needs: Dry; Low

Fire Resistant: YES – Zone 1: Plant 30+ feet from Structure

Attributes: Mounding Growth Habit; Drought Tolerant; Evergreen with Grey-Green Foliage; Attracts Bees/Butterflies.

Uses: Rock Gardens; Edging Plant; Ground cover; Border Front.

Note: Shear Plants after flowering to encourage additional growth; each flower opens for only one day.

Native to: Europe; Asia Minor

Oregon Native: NO

USDA Hardiness Zone: 4 – 7

Horticulture Report: Armeria maritima (Sea Thrift)

Posted on September 23, 2021 by Ashland Garden Club

Plant Name: Armeria maritima

Common name: Sea Thrift
Plant Type: Herbaceous Perennial
Plant Height: .5’ – 1’
Plant Width: .5’ – 1’
Bloom Time: April – May
Flower Color: Pink to White
Exposure: Full Sun
Soil Requirements: Infertile, Well-Drained Soil.
Water Needs: Low
Fire Resistant: YES; Zone 8 = Plant 30’+ from house.
Attributes: Showy Flowers; Drought Tolerant; Deer Tolerant; Attracts Bees; Butterflies.
Uses: Ground Cover; Edging/Border Fronts; Rock Gardens; Containers.
Note: Deadhead to Encourage More Blooms.
Native to: Northern Hemisphere
Oregon Native: YES
USDA Hardiness Zone: 4 – 8

Report by: Viki Ashford, AGC Board Member

Photo by: Carlotta Lucas, AGC Board Member

Horticulture Report: Chives

Posted on September 12, 2021 by Ashland Garden Club

Plant Name: Allium schoenoprasum

Common name: Chives

Plant Type: Perennial Bulb

Plant Height: 1’ – 1.5’

Plant Width: 1’ – 1.5’

Bloom Time: June – August

Flower Color: Pale Purple

Exposure: Full Sun to Part Shade.

Soil Requirements: Average, Medium, Well-Drained.

Water Needs: Medium

Fire Resistant: YES – Zone 1 – Plant 10’+ from house.

Attributes: Showy Flower with Fragrant Leaves; Deer/Drought Tolerant; Attracts Butterflies, Bees, Pollinators; Consistent performer

Uses: Herb; Herb/Vegetable Gardens; Rock Gardens; Containers.

Note: Self seeds unless spent flowers are deadheaded; Harvest Leaves by clipping at base of plant; Root Rot may occur in poorly drained soil.

Native to: Temperate Northern Hemisphere

Oregon Native: YES

USDA Hardiness Zone: 4 – 8

Report by: Viki Ashford, AGC Board Member

Photo by: Carlotta Lucas, AGC Board Member

Oregon Native: Ceanothus prostratus

Posted on August 23, 2021 by Ashland Garden Club

Plant Name: Ceanothus prostratus
Common name: Mahala Mat
Plant Type: Evergreen Groundcover/Subshrub
Plant Height: 6”
Plant Width: 8’
Bloom Time: May – July
Flower Color: Pale Purple to Pale Blue to White
Exposure: Sun
Soil Requirements: Average, Gritty Soil.
Water Need: Regular; Drought Tolerant; Dry in Summer.
Fire Resistant: YES; Plant 30’+ from house.
Attributes: Attracts Bees; Fixes Nitrogen; Host Plant to Some Butterflies; Attracts Other Insects; Deer Resistant.
Uses: Erosion Control; Bee/Bird/Butterfly Gardens.
Note: Verticillium Wilt Resistant.
Native to: California into Nevada; Pacific Northwest
Oregon Native: YES
USDA Hardiness Zone: 6 – 9

Report by: Viki Ashford, AGC Member, Master Gardener

Photo Credit: Adam Schneider, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons https://commons.wikimedia.org/wiki/File:Mahala_mat.jpg

Horticulture Report: Creeping Thyme

Posted on August 16, 2021 by Ashland Garden Club

Plant Name: Thymus praecox
Common name: Creeping Thyme
Plant Type: Groundcover
Plant Height: 1” – 4”
Plant Width: 6” – 18”
Bloom Time: May – August
Flower Color: Pink White, Purple
Exposure: Full Sun to Part Shade
Soil Requirements: Average, Dry – Medium, Well-Drained; Tolerates Rocky or Poor Soil.
Water Need: Drought Tolerant Once Established
Fire Resistant: YES. Plant 30’+ from house.
Attributes: Leaves in Shades of Light to Dark Green Yellow, or Variegated; Deer Resistant; Attracts Bees/Butterflies.
Uses: Rock Walls; Between Pavers; Rock Garden; Path Edging.
Note: Cut Back Stems to Maintain Plant Appearance; Susceptible to Root Rot in Poor Draining Soils.
Native to: SW & Central Europe; Greenland; Turkey
Oregon Native: NO
USDA Hardiness Zone: 4 – 10