Alstroemerias (Peruvian lily ) should not be deadheaded. Snipping off the faded blossoms will cause the plant stop blooming for the season. Instead grasp the spent stem and pulled it out from the ground. The bulb will then send up a replacement stalk, and extends its blooming to all summer.
Tag Archives: perennials
Sisyrinchium palmifolium (Palm-Leaf Yellow-Eyed Grass)
Plant Name: Sisyrinchium palmifolium
Common name: Palm-Leaf Yellow-Eyed Grass
Plant type: Herbaceous perennial
Height: Floral Stem 18-24” with 3-5 Flowers each, Leaf 20-24”
Spread: 8-12” Clump
Bloom Time: May- June 
Flower Color: Bright yellow with a tinge of orange in the throat.
Exposure: Full Sun to Partial Shade
Soil Requirements: Well-drained; Rich
Water Needs: Moist in the spring; Tolerates dry Conditions summer & fall.
Attributes: Bright Yellow Flowers; Hardy Perennial; Deer Resistant; Attracts Bees; Carefree; Blue-green Semi-Evergreen Foliage; Siberian Iris-like leaves
Note: Similar to West coast Native: Blue-eyed Grass (sisyrinchium augustiifolium) and California Native Yellow-Eyed Grass (sisyrinchium californicum).
Uses: Cut Flowers; Deer Resistant Gardens; Perennial Gardens; Borders, Low-water gardens.
Native to: South America: Argentina, Brazil, And Uruguay
Oregon Native: NO
USDA Hardiness Zone: 7a-9b
Report and Photo by: Gena Goddard, AGC Member & Oregon State Flower Judge
Oregon Native Plant: Achillea millefolium (Common Yarrow)
Plant Name: Achillea millefolium
Common name: Common Yarrow
Plant Type: Perennial
Plant Height: 3’
Spread: 2-3′
Bloom Time: April – September
Flower Color: Yellowish White
Exposure: Sun to Part Shade
Soil Requirements: Dry
Water Needs: Medium
Attributes: Use in Fresh or Dried Arrangements with pleasing Fragrance; Value to native bees. Attracts butterflies.
Note: A complex of both native and introduced plants and their hybrids.
Uses: In fresh or dried arrangements; pleasant fragrance.
Native to: North America
Oregon Native: YES
USDA Hardiness Zone: 3 – 9
Report submitted by: Viki Ashford
Photo by: (c) Steve Guttman, some rights reserved (CC BY-NC-ND), http://www.flickr.com/photos/24013640@N02/3683708823
Horticulture Report:Phlox stolonifera (Creeping Phlox)
Plant Name: Phlox stolonifera
Common name: Creeping Phlox
Plant Type: Semi-Evergreen Perennial 
Plant Height: 6″ – 12″
Spread: 9″ – 18″
Bloom Time: May – September
Flower Color: Lavender, Blue, or White
Exposure: Part Shade to Shade
Soil Requirements: Humus Rich, Moist Soil
Water Needs: Medium
Attributes: Deer Tolerant
Note: Slugs a problem in Moist Soil; Spread by Stolons
Uses: Ground Cover; Cover for Early Spring Bulbs; Border Fronts; Rock Gardens.
Native to: Southeastern US
Oregon Native: NO
USDA Hardiness Zone: 5 – 9
Report by Viki Ashford, AGC Member
Photo Credit: Michael Wolf / CC BY-SA (https://creativecommons.org/licenses/by-sa/3.0)
Horticulture Report: Agastache foeniculum
Plant Name: Agastache foeniculum
Common name: Anise Hyssop
Plant Type: Herbaceous Perennial
Plant Height: 2’ – 4’
Spread: 1.5’ – 3’
Bloom Time: June – September
Flower Color: Lavender to Purple
Exposure: Full Sun to Part Shade
Soil Requirements: Well-Drained
Water Needs: Dry to Medium
Attributes: Deer Resistant; Drought Tolerant; Attracts Butterflies & Hummingbirds; Fragrant; Good Nectar Plant for Bees
Note: Deadhead spent flowers to promote additional bloom. Spreads by rhizomes & easily self-seeds.
Watch for Rust, Powdery Mildew, & Leaf Spot.
Uses: Herb; Naturalized Gardens; Good Cut or Dried Flower; Back of the Border Gardens.
Native to: Northern North America
Oregon Native: Native to Washington, but NOT Oregon
USDA Hardiness Zone: 4 -8
Report Submitted by: Viki Ashford
Oregon Native: Monarda didyma (Scarlet Bee Balm)
Plant Name: Monarda didyma
Common name: Scarlet Bee Balm
Plant Type: Perennial
Plant Height: 2’ – 4’
Spread: 2’ – 3’
Bloom Time: May – October.
Flower Color: Scarlet Red
Exposure: Sun to Part Shade.
Soil Requirements: Rich, Moist, Acidic.
Water Needs: Medium
Attributes: Attracts Hummingbirds, Bees, Butterflies; Nectar Source, Deer Resistant; Good Cut Flower;
Note: Susceptible to Powdery Mildew; in the Mint Family; Deadhead Flowers to Prolong Summer Bloom.
Uses: Perennial Border; Cottage Garden; Native Plant Garden; Bird & Butterfly Garden.
Native to: Eastern North America & Oregon & Washington
Oregon Native: YES
USDA Hardiness Zone: 4 – 9
Report by: Viki Ashford, Master Gardener & AGC Member