- You Will Get 500 Seeds Of Purple Anise Hyssop Blue Giant Licorice Mint Agastache Foeniculum Herb Seeds. - Description: - Name: Anise Hyssop. - Other Common Names: Licorice Mint / Blue Giant Hyssop. - Scientific Name: Agastache Foeniculum. - Color: Lavender PURPLE FLOWERS ON FUZZY SPIKES. - Plant Seeds: Outdoors AFTER FROST / Indoors WEEKS BEFORE LAST FROST. - Plant Height: 24 - 48”. - Plant Spacing: 15 - 18”. - Bloom Time: Summer. - Hardiness Zone: 4 - 9 (& RESEEDS ITSELF). - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.