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DENDROMECON harfordii

Image of Dendromecon harfordii

John Rickard

Family

Papaveraceae

Botanical Name

DENDROMECON harfordii

Plant Common Name

Harford's Tree Poppy, Island Bush Poppy

General Description

Grown for its lush evergreen foliage and sunny poppy-flowers, this medium to large shrub from California's Santa Rosa and Santa Cruz islands makes a great choice for mild-climate gardens.

Bluish green, blunt-tipped, oval leaves crowd the upright to arching branches of this relatively cold-tender shrub. Numerous bright yellow, four-petaled poppies are borne toward the branch tips from spring into summer. The solitary, 2- to 3-inch (5- to 7.5-cm) blooms have a central flourish of orange-yellow stamens. Long, plump, cucumber-shaped seedpods follow the flowers. Variety rhamnoides from Santa Catalina Island (and formerly from San Clemente Island) has longer, grayer leaves with pointed tips.

This drought-tolerant shrub thrives in well-drained soil and full to partial sun. Hardy to USDA Zone 8, it may survive in Zone 7 if planted against a sheltered wall. The perfect centerpiece for plantings of California natives, island bush poppy works well in mixed borders, hedges, and seaside plantings. It will also flourish in a sunny conservatory or greenhouse.

Characteristics

  • AHS Heat Zone

    10 - 1

  • USDA Hardiness Zone

    8 - 10

  • Sunset Zone

    7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Broadleaf Evergreen

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    6'-18' / 1.8m - 5.5m

  • Width

    6'-18' / 1.8m - 5.5m

  • Bloom Time

    Early Spring, Spring, Late Spring, Early Summer

  • Native To

    California

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Drought, Salt

  • Growth Rate

    Medium

  • Water Requirements

    Drought Tolerant

  • Habit

    Oval/Rounded

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow

  • Fruit Color

    Green, Tan

  • Foliage Color (Spring)

    Blue Green

  • Foliage Color (Summer)

    Blue Green

  • Foliage Color (Fall)

    Blue Green

  • Foliage Color (Winter)

    Blue Green

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Feature Plant, Hedges, Mixed Border, Screening / Wind Break

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    Yes