Morello, also known as Hummingbird Mint or Hyssop, is a hybrid Terra Nova Nurseries developed for large flower spikes and a strong upright habit. This variety also offers mildew resistance and darkened foliage in cooler temperatures. Morello has an upright clumping habit of 27-30" tall and 24" wide. Mint-flavored foliage makes excellent tea, and fragrant burgundy flower spikes bloom from May through September. Morello brings a striking pop of long-lasting perennial color to containers, borders, and landscape beds. Hardy in zone 5-10, Agastache resists deer, attracts pollinators, and flourishes in full sun with good drainage. For a compact variety, try Poquito Lavender.
Morello Selling Tips
Sell Morello to customers looking for a low-maintenance perennial flower to attract pollinators to the landscape. Homeowners often look for attractive perennials for borders or cottage gardens that won't add to the outdoor workload. Morello offers many benefits, including mildew tolerance, a pleasant aroma, culinary use, and a long bloom season. Bees and butterflies love Agastache. This plant is well-suited to mass plantings or pairs well in borders or large containers with Panicum, Perovskia, Leucanthemum, Rudbeckia, and Echinacea.
Coach Your Customer:
1. Space plants 18-24" apart in full sun in well-drained soil. Agastache may develop root rot in soils that are too moist. Use gravel at the bottom of your planting hole to provide additional drainage, especially for overwintering.
2. Water regularly, especially during the first year, for a healthy root system.
3. Cut flowers back in late summer to encourage continued blooming.
General Growing Tips For Your Rooted Cutting Liner
To achieve the best results with Morello, plant one rooted plug per 4-inch container. Use a well-drained soil with a pH of 5.5-6.5, EC of 1.5-2.0 mS/cm, and light feed (100-150 ppm). Pinch once at transplant. You may see spider mites or whiteflies. Root rot and downy mildew can be a problem in poorly draining soil or wet conditions. This variety offers superior disease resistance.
Flowering
Burgundy flower spikes bloom from May through September.
Pinching
Pinch once at transplant.
Spacing
Space containers for adequate airflow around the base of each plant and to allow the sun to penetrate to the soil level.
Height Control
This plant doesn't require PGRs.
Pests
You may see spider mites or whiteflies.
Disease
Agastache is not prone to disease. Avoid root rot by planting in well-drained soil. Watch for rust, which may be indicated by yellowed and withering leaves. Rust should be treated by immediately removing the affected plant parts. For a rust infestation that continues to return, a preventative fungicide may be used when new growth begins in spring. Prevent rust from spreading by removing all diseased debris at the end of the season. Powdery mildew may also affect Agastache, but is unlikely to cause the plant to die. This fungus causes a grayish powder on the surface of leaves, and can be treated by removing affected plant parts and using a preventative fungicide.
Prevent fungus and mildew infection by watering at the base of each plant in the morning, providing adequate airflow in your greenhouse, and allowing sunlight to penetrate to the soil level of each plant.
Planting Morello Liners
We recommend planting one rooted liner per 4-inch container. Use a well-drained soil and completely bury the ellepot in the center of the container.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Agastache Morello Quick Reference Guide
4 Inch crop time
6-8 Weeks
Bloom Period
Fall, Summer
Color
Burgundy
Habit
Upright
Height
27-30 Inches
Light
Full Sun
Minimum Temp
58
Perennial Zone
5-10
Water Needs
Light
Patented Plant
Yes
Current
Availability
Current Availability
01-26-2026 (Week 05)
0
02-02-2026 (Week 06)
0
02-09-2026 (Week 07)
0
02-16-2026 (Week 08)
0
02-23-2026 (Week 09)
0
03-02-2026 (Week 10)
1,400
03-09-2026 (Week 11)
0
03-16-2026 (Week 12)
1,000
03-23-2026 (Week 13)
300
03-30-2026 (Week 14)
3,000
04-06-2026 (Week 15)
3,000
04-13-2026 (Week 16)
3,400
04-20-2026 (Week 17)
1,300
04-27-2026 (Week 18)
0
05-04-2026 (Week 19)
1,700
05-11-2026 (Week 20)
900
05-18-2026 (Week 21)
1,900
05-25-2026 (Week 22)
2,000
06-01-2026 (Week 23)
900
06-08-2026 (Week 24)
2,200
06-15-2026 (Week 25)
2,200
06-22-2026 (Week 26)
500
06-29-2026 (Week 27)
600
07-06-2026 (Week 28)
800
07-13-2026 (Week 29)
800
07-20-2026 (Week 30)
800
07-27-2026 (Week 31)
800
08-03-2026 (Week 32)
800
08-10-2026 (Week 33)
800
08-17-2026 (Week 34)
800
08-24-2026 (Week 35)
800
08-31-2026 (Week 36)
800
09-07-2026 (Week 37)
800
09-14-2026 (Week 38)
800
09-21-2026 (Week 39)
800
09-28-2026 (Week 40)
800
10-05-2026 (Week 41)
800
10-12-2026 (Week 42)
800
10-19-2026 (Week 43)
800
Morello, also known as Hummingbird Mint or Hyssop, is a hybrid Terra Nova Nurseries developed for large flower spikes and a strong upright habit. This variety also offers mildew resistance and darkened foliage in cooler temperatures. Morello has an upright clumping habit of 27-30" tall and 24" wide. Mint-flavored foliage makes excellent tea, and fragrant burgundy flower spikes bloom from May through September. Morello brings a striking pop of long-lasting perennial color to containers, borders, and landscape beds. Hardy in zone 5-10, Agastache resists deer, attracts pollinators, and flourishes in full sun with good drainage. For a compact variety, try Poquito Lavender.
Morello Selling Tips
Sell Morello to customers looking for a low-maintenance perennial flower to attract pollinators to the landscape. Homeowners often look for attractive perennials for borders or cottage gardens that won't add to the outdoor workload. Morello offers many benefits, including mildew tolerance, a pleasant aroma, culinary use, and a long bloom season. Bees and butterflies love Agastache. This plant is well-suited to mass plantings or pairs well in borders or large containers with Panicum, Perovskia, Leucanthemum, Rudbeckia, and Echinacea.
Coach Your Customer:
1. Space plants 18-24" apart in full sun in well-drained soil. Agastache may develop root rot in soils that are too moist. Use gravel at the bottom of your planting hole to provide additional drainage, especially for overwintering.
2. Water regularly, especially during the first year, for a healthy root system.
3. Cut flowers back in late summer to encourage continued blooming.
General Growing Tips For Your Rooted Cutting Liner
To achieve the best results with Morello, plant one rooted plug per 4-inch container. Use a well-drained soil with a pH of 5.5-6.5, EC of 1.5-2.0 mS/cm, and light feed (100-150 ppm). Pinch once at transplant. You may see spider mites or whiteflies. Root rot and downy mildew can be a problem in poorly draining soil or wet conditions. This variety offers superior disease resistance.
Flowering
Burgundy flower spikes bloom from May through September.
Pinching
Pinch once at transplant.
Spacing
Space containers for adequate airflow around the base of each plant and to allow the sun to penetrate to the soil level.
Height Control
This plant doesn't require PGRs.
Pests
You may see spider mites or whiteflies.
Disease
Agastache is not prone to disease. Avoid root rot by planting in well-drained soil. Watch for rust, which may be indicated by yellowed and withering leaves. Rust should be treated by immediately removing the affected plant parts. For a rust infestation that continues to return, a preventative fungicide may be used when new growth begins in spring. Prevent rust from spreading by removing all diseased debris at the end of the season. Powdery mildew may also affect Agastache, but is unlikely to cause the plant to die. This fungus causes a grayish powder on the surface of leaves, and can be treated by removing affected plant parts and using a preventative fungicide.
Prevent fungus and mildew infection by watering at the base of each plant in the morning, providing adequate airflow in your greenhouse, and allowing sunlight to penetrate to the soil level of each plant.
Planting Morello Liners
We recommend planting one rooted liner per 4-inch container. Use a well-drained soil and completely bury the ellepot in the center of the container.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Agastache Morello Quick Reference Guide
4 Inch crop time
6-8 Weeks
Bloom Period
Fall, Summer
Color
Burgundy
Habit
Upright
Height
27-30 Inches
Light
Full Sun
Minimum Temp
58
Perennial Zone
5-10
Water Needs
Light
Patented Plant
Yes
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