- Name: Red Agastache ‘Heather Queen’ - Other Common Names: Red Hummingbird Mint / Mexican Giant Hyssop / Mosquito Plant - Scientific Name: Agastache Cana ‘Heather Queen’ - Color: Purplish Red - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: All Summer - Frost - Hardiness Zone: 5 - 10 - Plant Height: 24 - 36" - Plant Spacing: 15 - 18" - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Dry - Quantity: 30 Seeds - Other: Agastache Is A Fragrant, Long Blooming Beauty, And ’Heather Queen’ Is One Of The Most Fragrant Varieties. Its Slender Spikes Of Tubular Flowers Are A Favorite Of Hummingbirds, Bees, & Butterflies. This Herb Is Very Tolerant Of Dry Conditions, So It Is Quite Suitable For Containers.