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AGASTACHE foeniculum

Image of Agastache foeniculum

Mark A. Miller

Family

Lamiaceae

Botanical Name

AGASTACHE foeniculum

Plant Common Name

Anise Hyssop, Blue Giant Hyssop

General Description

Blue giant hyssop is a strongly aromatic, drought tolerant, erect perennial native throughout the northern United States and Canada. This member of the mint family has downy, medium green, licorice-scented leaves that appear on long stems topped with spikes of blue-purple flowers that appear from from midsummer to autumn. Highly attractive to bees and butterflies, this plant will continue blooming if deadheaded. The fuzzy leaves that release the licorice aroma tend to dissuade browsing damage from deer.

Blue giant hyssop is tolerant of poor soils and an excellent choice for sunny mixed borders and informal wildflower gardens. It can also be dried and used to make herbal tea.

Characteristics

  • AHS Heat Zone

    11 - 5

  • USDA Hardiness Zone

    4 - 9

  • Sunset Zone

    A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    2'-5' / 0.6m - 1.5m

  • Width

    12"-28" / 30.5cm - 71.1cm

  • Bloom Time

    Summer, Late Summer, Early Fall, Fall

  • Native To

    Northeastern United States, Mid-Atlantic United States, North-Central United States, Northwestern United States, Canada

Growing Conditions

  • Soil pH

    Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Blue, Purple, Blue Violet

  • Flower Color Modifier

    Bicolor

  • Fruit Color

    Brown

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    Yes

  • 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

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Feature Plant, Herb / Vegetable, Mixed Border, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    Yes