Anise hyssop (Agastache foeniculum)

Anise hyssop

Also known as: Blue giant hyssop

Anise hyssop (Agastache foeniculum) is a perennial herb characterized by showy, lavender flowers that bloom from early summer to the first frost. The flowers have a minty fragrance and attract bees and birds. This drought-tolerant plant is deer resistant and a self pollinator, growing from 61 to 122 cm tall.

Scientific classification

Species

Anise hyssop (Agastache foeniculum)

Mints plantains olives and allies

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61 cm to 1.2 m

Plant Height

30 cm

Spread

Green

Leaf Color

2.5 cm

Flower Size

Brown

Fruit Color

Purple, Lavender, Blue, Violet

Flower Color

Green, Red

Stem Color

Winter dormancy

Dormancy

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Summer, Fall

Growth Season

Moderate

Growth Rate

Images of Anise hyssop

Distribution of Anise hyssop

Distribution Map

Anise hyssop is native to the temperate regions of North America and has been introduced to parts of Europe. It is not only found in the wild in its native range but is also cultivated in various areas both within and outside of its indigenous locale.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Dry thickets, fields and waste ground on prairies and plains

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

Aromatic anise hyssop is popular for the heady scent it exudes whilst the flowers bloom during the summer and fall. This erect ornamental is perfect for adding vertical lines to borders and landscapes. It is resistant to both deer and rabbits, and is great for cottage gardens and as a cut flower.

Symbolism

Cleanliness

Name Story

Anise hyssop: The common name, anise hyssop is confusing because this plant is neither anise seed plant nor star anise plant. However, it serves the same purposes as them in culinary and medical applications.

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Cultivars

There are several recognized cultivars of Anise hyssop, including the following common varieties :

Anise hyssop 'Alabaster'Giant hyssops 'Blue Fortune'

Quickly Identify Anise hyssop

Upright stem with quadrangular shape and vibrant green color.

Distinct anise or licorice aroma emitted by the foliage when crushed.

Ovate to broad-lanceolate leaves with coarsely toothed margins and white undersides.

Small, oblong nutlets with smooth texture and brown hairs at the tip.

Colorful, dense spikes of small tubular flowers in lavender to purple hues.

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Care Guide for Anise hyssop

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Anise hyssop, native to North America's prairies, prefers moderate moisture and consistent weekly watering to thrive. Ideal for rain gardens, it adapts well to seasonal rainfall patterns, promoting water conservation in its natural habitat. This perennial herb requires care that mirrors its native environments.

Fertilize: Anise hyssop thrives with balanced fertilizers, such as 10-10-10, applied biannually in spring and fall to support growth. A light sprinkling around its base minimizes foliage contact. Adjust fertilization seasonally, and water post-application for even nutrient distribution while avoiding over-fertilization during dormancy.

Pruning: Anise hyssop features aromatic foliage and vibrant purple flowers, thriving in gardens. Prune in early to late spring by removing dead stems and thinning overcrowded areas for better air circulation. Cutting back to one-third of height promotes bushier growth, more blooms, and overall plant health.

Propagation: Anise hyssop propagates best by sowing in spring, exhibiting easy propagation through seedling emergence and robust roots. Optimal growth is achieved in well-draining soil conditions.

Repotting: Repot anise hyssop every 2-3 years in spring for optimal growth. Choose a larger pot with good drainage and use well-draining soil. Keep moisture consistent but avoid waterlogging. Anise hyssop thrives in sunny locations and can tolerate some drought once established.

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Images of Anise hyssop

Distribution of Anise hyssop

Culture

Cultivars

Quickly Identify Anise hyssop

Care Guide for Anise hyssop

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Common Pests & Diseases