Tag Archives: Cut Flowers

Horticulture Report: Agastache foeniculum

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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: Collomia grandiflora

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Plant Name:  Collomia grandiflora
Common name: Large Flower Collomia
Plant Type:  Annual Herb
Plant Height:  4” – 3’
Bloom Time: April – June
Flower Color:  Yellow Salmon to White with Blue Pollen
Exposure:  Part Shade to Full Sun
Soil Requirements: Dry
Water Needs:  Low to No Water.
Attributes: Pollen for Bees.
Note:  Flowers are eaten by deer.  Powdery mildew is possible.
Uses: Cut Flower; Native Garden; Wildflower gardening; Pollinator Garden.
Native to:  Western North America
Oregon Native:  YES
USDA Hardiness Zone:  6a – 9b

Report by: Viki Ashford

Dahlias

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Plant name: Dahlia
Plant type: Tuberous flowers; biennial tubers are planted in the spring
Height: Large: 3-4 feet, Medium: 1-2 feet, Small: 10-20 inches
Spread: Varies with variety
Bloom Time:  Summer, fall
Flower Color:  Orange, Pick, Purple, Red, White, Yellow, and Multi-color
Exposure: Full Sun. (6-8 hours of morning sun is best)
Soil Requirements: Sandy Loam
Water Needs: Moist to Moderate
Attributes:   Large flamboyant flowers

Notes:  Will not tolerate frost. Not suited for hot/humid climates.
Tubers struggle in cold soil, plant after ground temperatures reach 60o F
Tubers typically dug in the fall, stored for winter, replanted in late spring. Uses: Display Gardens, Cut flowers, Late-season color, To “wow” your neighbors & friends!
Native to: South America Andes
USDA Hardiness Zones: 8-10