Agastache foeniculum

Anise hyssop

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Key information

Plant type

Tender perennial

Flower colour



Flowers, Aromatic foliage


Half hardy

Skill level


photo by Richard Bloom, copyright GAP Photos (37254)

Plant details

Native to western United States, this tender perennial has licorice-scented leaves. Easily raised from seed each spring, plants should be put in the garden after the danger of frost has passed in early summer. They enjoy a sunny spot in well-drained soil. From summer to early autumn, they produce purplish-blue flowers that are a magnet for bees. This plant adds interest to borders and containers while attracting wildlife to the garden.

Family: Lamiaceae

Genus: Agastache

Species: foeniculum

Plant type: Tender perennial

Flower colour: Blue

Foliage colour: Mid-green

Feature: Flowers, Aromatic foliage

Sun exposure: Full sun

Soil: Well-drained/light

Hardiness: Half hardy

Skill level: Experienced

Height: 120cm

Spread: 30cm

Time to plant seeds: January to March

Flowering period: July to August

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