Images Depict Mature Plants
Agastache Purple Haze
Agastache 'Purple Haze'
Purple Haze Agastache is a strong choice when you want summer color, fragrance, and pollinator activity from one easy-care perennial. The lavender-blue flower spikes bring a soft, cooling color to sunny beds, while the licorice-scented foliage, deer resistance, and drought tolerance make it practical for real garden conditions. I especially like it near patios and walkways, where you can enjoy the fragrance and watch hummingbirds, butterflies, and bees work the blooms.
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Lavender-Blue Spikes for Sunny Pollinator Gardens
Lavender-blue flowers from summer into fall.
Purple Haze Agastache produces upright spikes of lavender-blue flowers that rise above aromatic foliage from mid-summer through fall. The soft flower color adds height, movement, and a cooling effect to sunny borders, pollinator beds, cottage gardens, and mixed perennial plantings.
A hummingbird mint with fragrant foliage.
Also known as Purple Haze Hyssop or Hummingbird Mint, this perennial has licorice-scented foliage that releases fragrance when crushed or brushed against. That aromatic foliage adds sensory interest near patios, walkways, and garden edges while helping make the plant less appealing to deer.
A magnet for pollinators and hummingbirds.
Purple Haze Agastache is highly attractive to hummingbirds, butterflies, honey bees, and other beneficial pollinators. Its long-blooming flower spikes help keep the garden active through the warm months, making it a valuable addition to wildlife-friendly and pollinator-focused landscapes.
Heat-tolerant, drought-tolerant, and easy to grow.
This Agastache thrives in full sun and well-drained soil, especially dry, average, sandy, or lean soils. Once established, it handles heat and drought well, but it does not like wet winter soil, so good drainage is key to long-term success.
Beautiful in borders, masses, and containers.
Purple Haze Agastache works well as a focal point in mixed borders, repeated through sunny beds, planted in larger drifts, or grown in containers with excellent drainage. Pair it with coneflowers, salvia, yarrow, catmint, black-eyed Susans, Russian sage, and ornamental grasses for a colorful, low-maintenance pollinator display.
| Hardiness Zone: | 6-9 |
|---|---|
| Mature Height: | 2.5 to 3 feet |
| Mature Width: | 2 to 3 feet |
| Sunlight: | Full sun |
| Soil | Well-drained soil; performs well in dry, average, sandy, or lean soils and dislikes wet winter soil |
| Water | Water regularly after planting; drought tolerant once established |
| Bloom Time / Color | Mid-June through frost; lavender to lavender-blue flower spikes |
| Foliage: | Aromatic bluish-green foliage with a licorice or anise-like scent when crushed |
| Ornamental Features | Lavender-blue flower spikes, long bloom season, fragrant foliage, upright clump-forming habit |
| Wildlife Value | Attracts hummingbirds, butterflies, honey bees, and other beneficial pollinators |
| Resistance | Deer resistant, drought tolerant once established, heat tolerant, and generally low maintenance |
| Landscape Uses | Pollinator gardens, hummingbird gardens, sunny borders, cottage gardens, mixed perennial beds, mass plantings, containers, dry gardens, and low-water landscapes |
How to Care for Agastache Purple Haze
Be sure to read our planting instructions to ensure a healthy and happy Purple Haze Agastache Plant for years to come!
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How should I plant Purple Haze Agastache?
Plant Purple Haze Agastache in a full sun location with well-drained soil. Choose a site that receives at least 6 hours of direct sun per day, and avoid heavy, wet soil where the roots may stay soggy, especially during winter. Dig a hole about twice as wide as the root ball and set the crown level with the surrounding soil. Backfill with native soil, water deeply, and space plants about 24 inches apart to allow for mature growth, good airflow, and strong flowering.
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How often should I water Purple Haze Agastache after planting?
Water Purple Haze Agastache regularly during the first growing season while the roots establish. Keep the soil lightly moist after planting, but avoid constantly wet conditions because Agastache performs best when drainage is sharp. Once established, Purple Haze Agastache becomes drought tolerant and usually needs less supplemental water than many flowering perennials. During long dry spells or extreme heat, water deeply but infrequently to encourage strong roots and continued bloom performance.
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When should I fertilize Purple Haze Agastache?
Fertilize Purple Haze Agastache lightly in spring only if your soil is very poor. In most garden soils, a small amount of compost or a light application of balanced, slow-release fertilizer is enough. Avoid heavy feeding or overly rich soil, which can encourage soft, floppy growth and reduce the plant’s naturally upright habit. Purple Haze Agastache typically performs best in average to lean soil with plenty of sun and excellent drainage.
When and how should I prune Purple Haze Agastache?
Prune Purple Haze Agastache in late winter or early spring by cutting old stems back close to the ground before new growth begins. In colder climates, leaving stems standing through winter can help protect the crown and provide habitat for beneficial insects. During the growing season, deadhead spent flower spikes to keep the plant tidy and encourage continued blooming. Avoid cutting the plant back hard too late in the season, since tender new growth may not harden off well before winter.
