Millefolium Diadem, also known as Common Yarrow or Achillea ptarmica, is a perennial landscape plant native to Europe. Achilles, of Greek mythology, used his namesake plant to treat battlefield wounds. While its medicinal use is minimal, Janus Verschoor bred this variety for its compact habit and attractive flowers. Diadem offers a rounded habit of 12" tall and wide with white pom-pom flowers that bloom summer through fall. Hardy in zone 4-9, yarrow flourishes in full sun in containers, landscape borders, and as a groundcover. Drought-tolerant and low-maintenance, this unique Achillea variety attracts bees and butterflies to the garden. For an early long-blooming variety, try Desert Eve.
Millefolium Diadem Selling Tips
Sell Millefolium Diadem to customers looking for a low-maintenance perennial addition to a border or a cheery, drought-tolerant flower for a mixed container. Diadem is a compact, non-invasive yarrow suitable for containers and landscape borders. In full sun, Achillea requires little more than regular rainwater to thrive. Lovely white pom-pom flowers attract bees and butterflies to the garden. Pair this plant with Gaillardia, Black-eyed Susan, Coneflower, Argyranthemum Angelic Ruby, and Leucanthemum Lucille Grace for a cottage garden look.
Coach Your Customer
1. Space plants 10-12" apart in well-drained soil in full sun.
2. Water regularly after transplanting to establish healthy roots and then water occasionally, allowing the soil to dry between watering.
3. Plant Achillea in the vegetable or cut flower garden to attract pollinators.
4. Use gloves when handling Achillea, as some people have a mild allergy to its foliage and sap.
General Growing Tips For Your Rooted Cutting Liner
To achieve the best results with Millefolium Diadem, use well-drained soil in full sun with light feed (100-150 ppm N), temperatures of 55-62 degrees, and a pH of 5.8-6.6. Plant one rooted plug per 4-inch container or 2-3 per 10-inch container. Powdery mildew and root rot can be a problem. Once established, Achillea is very low-maintenance. In containers or landscape applications, it requires little more than full sun and rainwater to thrive.
Flowering
White flowers bloom from summer through fall.
Pinching
Millefolium Diadem doesn't require pinching.
Spacing
Space containers for adequate airflow around the base of each plant and to allow sunlight to penetrate to the soil level.
Height Control
Use a spray of B-Nine if needed.
Pests
Achillea isn't prone to pests. In landscape applications, it repels pests and attracts pollinators and ladybugs.
Disease
Millefolium Diadem isn't prone to disease. Watch for powdery mildew and root rot. Take the following precautions to prevent disease caused by wet, humid conditions.
1. Water plants at the base in the morning and allow the soil to dry out between waterings.
2. Provide good airflow in your greenhouse. We've had success with using horizontal airflow fans.
3. Space containers to allow airflow and for sunlight to penetrate to the soil level.
Planting Millefolium Diadem Liners
We recommend planting one rooted liner per 4-inch container or 2-3 plugs per 10-inch container. Use well-drained soil and completely bury the ellepot in the center of 4-inch containers or equally spaced in 10-inch containers.
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.
Achillea Millefolium Diadem Quick Reference Guide
4 Inch crop time | 8-10 Weeks |
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10 Inch crop time | 8-10 Weeks |
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Bloom Period | Fall, Summer |
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Color | White |
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Habit | Compact, Upright |
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Height | 12 inches |
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Light | Full Sun |
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Minimum Temp | 55 |
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Perennial Zone | Zones 4-9 |
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Water Needs | Light |
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Patented Plant | yes |
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