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in Tucson, Phoenix,
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Gardening in Tucson, Phoenix, and Southern California

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Agastache rupestris: Threadleaf Giant Hyssop / Licorice Mint

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Description
Form: Herb.
Lifespan: Perennial.
Leaf retention: Deciduous.
Growth rate: Moderate.
Mature Size: 2-3' high and 1.5' wide.
Flowers: Orange-red with purple calyx (sepals at base of flower), tubular, arrayed on spikes, edible. Cultivars available in several colors. Flowers are naturally wrinkled.
Bloom: Summer to mid-fall.
Fruit: Tiny black seeds within dried flowerhead.
Leaves: Green to silver-green, lance-shaped, licorice or root beer fragrance when bruised, edible.
Stems: No thorns.
Wildlife: Attracts hummingbirds and butterflies.
Toxic / Danger: No.
Origin: Arizona, New Mexico and Mexico.

Cultivation and Uses
USDA hardiness zones: 5-10.
Heat tolerant: Yes.
Drought tolerant: Yes when established.
Sun: Full sun to avoid fungal diseases. May get leggy in part shade.
Water once established: Once or twice a month. Moist soil shortens lifespan. Should be kept dry in winter.
Soil: Well drained, dry, pH 6.1-7.8 (slightly acidic to slightly alkaline). Sensitive to salt and dies in saline soil.
Mulch: Do not mulch so soil will dry quickly.
First Year Care: Water every day to establish extensive root system, but do not overwater.
Prune: Remove spent flowers to extend bloom. Cut nearly to ground in mid-winter or after last frost.
Litter: Low.
Propagation: Seed and cuttings.
Uses: Ornamental. Leaves used in teas, flowers in salads.

Comments
A member of the mint family. The Agastache plant genus is often called Hummingbird Mint. Another common name for this plant is Sunset Hyssop.



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