Images Depict Mature Plants
Morello Agastache
Agastache x 'Morello'
Morello Agastache is the one to use when you want hummingbird mint with a richer, warmer color than the typical blue and lavender types. The burgundy-rose flower spikes are bold, the pollinator activity is excellent, and the plant fits beautifully into sunny borders and containers. Give it full sun, sharp drainage, and a light hand with water and fertilizer, and it will reward you with a long season of color.
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Burgundy-Rose Agastache for Hummingbirds, Pollinators, and Sunny Borders
Morello Agastache Delivers Deep Burgundy-Rose Flower Color
Morello Agastache is a long-blooming perennial grown for its large burgundy-rose flower spikes, upright habit, and fragrant green foliage. Also known as Agastache Morello, Morello Hummingbird Mint, or Morello Giant Hyssop, this showy perennial brings rich warm color to sunny borders from late spring or summer into fall when conditions are favorable.
The flower color is the standout feature. Dense tubular blooms climb tall, upright spikes in deep rose, burgundy, and red-purple tones, creating a bold display that reads warmer and richer than many blue or lavender Agastache varieties. Use it where you want pollinator activity, strong vertical color, and a plant that looks good in both garden beds and containers.
A Hummingbird Mint with Big Pollinator Appeal
Morello Agastache is an excellent choice for homeowners who want a garden that feels alive through the warm season. Its nectar-rich tubular flowers attract hummingbirds, bees, butterflies, and other beneficial pollinators.
Plant Morello near patios, walkways, porches, and seating areas where you can enjoy the movement up close. Repeating it in groups or drifts creates a stronger color display and makes the flowers easier for pollinators to find. It pairs beautifully with Echinacea, Rudbeckia, Yarrow, Catmint, Salvia, Bee Balm, Russian Sage, Lavender, Coreopsis, Sedum, and ornamental grasses.
Upright Growth for Borders, Containers, and Cut Flowers
Morello Agastache typically grows to 27 to 33 inches tall and 20 to 24 inches wide, providing enough height for the middle of sunny borders while remaining manageable in mixed perennial beds. The upright stems help lift color above lower companions, creating a clean vertical accent.
Morello is also useful in containers and cutting gardens. The flower spikes add strong color to fresh arrangements, and the fragrant foliage adds another layer of sensory interest. In patio pots, use Morello as a colorful upright feature with trailing annuals, silver foliage, compact grasses, or other drought-tolerant sun plants.
Full Sun, Sharp Drainage, and Heat-Loving Performance
Plant Morello Agastache in full sun for the strongest stems, best flower color, and heaviest bloom. It can tolerate very light shade, but too much shade may reduce flowering and make the plant looser.
Good drainage is essential. Agastache performs best in average to lean soil that does not stay wet, especially through winter. Once established, Morello is drought-tolerant and handles summer heat well, making it a strong choice for sunny borders, low-water gardens, rock gardens, slopes, raised beds, and well-drained containers.
Deer Resistant, Fragrant, and Easy to Maintain
Morello Agastache is generally considered deer-resistant and rabbit-resistant, thanks in part to its aromatic foliage. The fragrant leaves help make the plant less appealing to browsing animals than many softer flowering perennials.
Maintenance is simple. Deadhead spent flower spikes to keep the plant looking fresh and encourage continued bloom. In colder climates, leave some stems standing through winter to help protect the crown, then cut old stems back in late winter or early spring before new growth begins. Avoid overwatering, heavy clay, and overly rich fertilizer to keep the plant sturdy and long-lived.
| Hardiness Zone: | 5-10 |
|---|---|
| Mature Height: | 27 to 33 inches tall |
| Mature Width: | 20 to 24 inches wide |
| Sunlight: | Full sun preferred |
| Soil | Average to lean, coarse, very well-drained soil |
| Water | Water regularly during establishment; drought tolerant once established |
| Bloom Time / Color | Late spring or summer into fall; deep burgundy-rose to red-purple tubular flowers |
| Foliage: | Fragrant green to dark green foliage; may show bronze or darker tones in cool or stress conditions |
| Ornamental Features | Large burgundy-rose flower spikes, upright habit, fragrant foliage, long bloom season, strong color contrast |
| Wildlife Value | Attracts hummingbirds, butterflies, bees, and other beneficial pollinators |
| Resistance | Generally considered deer resistant and rabbit resistant; drought tolerant once established; heat tolerant |
| Landscape Uses | Pollinator gardens, hummingbird gardens, sunny borders, cottage gardens, dry gardens, rock gardens, containers, mass plantings, cut flower gardens |
How to Care for Morello Agastache
Be sure to read our planting instructions to ensure a healthy and happy Morello Agastache for years to come!
How should I plant Morello Agastache?
Plant Morello Agastache in full sun with coarse, well-drained soil. Dig a hole about twice as wide as the root ball and just as deep as the container. Set the crown level with the surrounding soil, backfill with loosened native soil, and water thoroughly after planting. Space plants about 20 to 24 inches apart so each clump has room for mature growth and good airflow. Avoid low, wet areas or heavy clay that stays soggy through winter. If drainage is a concern, plant Morello in a raised bed, slope, berm, rock garden, or container.
How often should I water Morello Agastache after planting?
Water Morello Agastache deeply after planting, then keep the soil lightly moist while the roots establish. During the first growing season, water when the top few inches of soil become dry, especially during hot or windy weather. Once established, Morello Agastache is drought-tolerant and usually needs less supplemental water than many flowering perennials. Water deeply but infrequently during extended dry spells, and avoid frequent shallow watering or soil that stays wet.
When should I fertilize Morello Agastache?
Fertilize Morello Agastache lightly in spring only if the soil is poor. A thin layer of compost or a modest application of slow-release balanced fertilizer is usually enough for healthy growth and flowering. Avoid heavy feeding. Agastache often performs best in average to lean soil, and too much fertilizer can encourage soft, floppy growth. Full sun, sharp drainage, and moderate watering are more important than frequent fertilizer.
When and how should I prune / cut back Morello Agastache?
Deadhead spent flower spikes during the bloom season to keep Morello Agastache tidy and encourage continued flowering. Cut individual flower stems back to a lower set of leaves or side shoots. In late winter or early spring, cut old stems back close to the ground before new growth begins. In colder regions, leave stems standing through winter for extra crown protection and beneficial insect habitat, then clean up once spring growth starts.
