Inconnu - Can cause cats indigestion.
Notice: We do not accept seeds that were given before 2024 as they had hybridized with Korean mint.
Plant Names
Agastache foeniculum
Blue Giant-hyssop
Agastache fenouil
Synonyms
anise hyssop
anise-mint
fennel giant hyssop
fragrant giant-hyssop
giant-hyssop
lavender giant-hyssop
licorice-mint
Plant Characteristics
Couleur de floraison: Violet
Bloom Period: Jun - Sep
Hauteur max: 3,0 feet
Max Width: 1,5 feet (spreads by rhizome)
Light Condition:
Plus de 6 heures d'ensoleillement par jour
More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Tolerates medium soil condition
Plus de 6 heures d'ensoleillement par jour
More than 2 or 3 hours but less than 6 hours of direct sun a day
Tolerates medium soil condition
Lifespan:
Vivace
des plantes qui reviennent année après année
Gardener Experience:
Suitable for beginner gardeners
Spreads by rhizome
Facile à germer
Self-seeding
Suitable for beginner gardeners
Spreads by rhizome
Facile à germer
Self-seeding
Landscape Uses:
Suitable for rain gardens
Suitable for container garden
Suitable for school gardens
Tolerates boulevard garden conditions
Suitable for rain gardens
Suitable for container garden
Suitable for school gardens
Tolerates boulevard garden conditions
Ecological Benefits:
No ecological benefits information available.
Tolerates:
Tolerates drought conditions
Tolerates salt conditions
Deer resistant
Rabbit resistant
Tolerates limestone conditions
Tolerates transplantation
Tolerates drought conditions
Tolerates salt conditions
Deer resistant
Rabbit resistant
Tolerates limestone conditions
Tolerates transplantation
Special Features and Considerations:
Seed and plant distribution status
No seeds available for this plant.
Nous acceptions les semences de cette plante
Faits intéressants
Blue Giant-hyssop is found in prairies, open woodlands, and meadow habitats. It produces tall spikes of lavender-blue flowers with aromatic leaves that smell like anise or licorice. It is a favourite plant for pollinator gardens. It is drought tolerant once established. Avoid overly rich soils, which can cause floppy growth. It is a great companion plant for prairie flowers.
Plant Location
Distribution according to VASCAN
Ephemeral
Native
Introduced
Excluded
Extirpated
Doubtful
Absent
Canadensis
Thrives in Ecozones
- Taïga des plaines
- Plaines boréales
- Cordillière montagnarde
- Prairies
- Plaines à forêts mixtes
Ecological Benefits
Butterflies Supported by Agastache foeniculum
No butterfly data available for this plant.
Specialized Bees Supported by Agastache foeniculum
No bee data available for this plant.
Complementary Plants
- Andropogon gerardi
Big Bluestem
Barbon de Gérard - Heliopsis helianthoides
False Sunflower
Héliopsis faux-hélianthe - Solidago juncea
Early Goldenrod
Verge d'or jonciforme - Symphyotrichum oolentangiense
Sky Blue Aster
Aster azuré - Veronicastrum virginicum
Culver's Root
Véronique de Virginie
Substitute For Non-Native Plants
- Linum usitatissimum (Common Flax)
- Perovskia Atriplicifolia (Russian Sage)
- Lupinus (Non-Native Lupins)
- Ajuga reptans (Bugleweed)
- Buddleia (Butterfly Bush)
- Delphinium (Delphinium)
- Salvia (Non-Native Sage)
- Lavandula (Lavender)
Sowing Information
Download Seed Envelope Labels (PDF)
- Sowing depth: Surface sow
- Sow by March
- Stratification duration: 30 days
- Self-seeding
Harvesting and Seed Sharing
- Harvest start month: October
- Harvesting indicator:
- Pods are brown and crisp and starting to open
- Seeds are dark and tiny stem attaching to the main stem is brown
- Seeds easily fall off pod when shaken
- Little stem connecting the pod to the main stem is brown (not green)
- Harvesting:
- Put pods in food processor or blender and blend seeds, and strain seeds using a strainer
- Seed viability test:
- Pas de test requis avant le don
- Packaging measure: Half of one, 1/32 teaspoon
- Seed storage:
- Sécher à l'air dans un sac en papier ou contenant ouvert, pour quelques jours jusqu'à sec
- Secouer de temps à autre pour prévenir la moisissure
- Cultivar: Yes, do not donate unless you know source, and there are no known cultivars in your garden or at proximity
- Harvesting notes: Please only donate seeds from the Seed Library that you received after 2024, as before they were cross-pollinatoed with Korean mint. Thanks!
- Harvesting video: Watch here
Toxicity Notes
Can cause cats indigestion.