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Description
Achillea Atrata, also known as black knapweed, is a herbaceous plant that belongs to the Asteraceae family. This plant is native to Europe and its surrounding areas, but it can now be found in many parts of the world. Achillea Atrata is known for its dark purple-black flowers, which bloom from July to September. Its leaves are greenish-grey in color and are deeply lobed. This plant can grow up to 60 cm tall and prefers to grow in dry, well-drained soils.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Achillea |
Appearance
Achillea Atrata is a beautiful plant that can add a touch of elegance to any garden. Its leaves are deeply lobed and greenish-grey in color, while its flowers are dark purple-black and grow in flat-topped clusters. This plant can grow up to 60 cm tall and has a bushy, upright habit.
Care Guide
To ensure that your Achillea Atrata plant thrives, follow these care guidelines:- Water: This plant prefers well-drained soils, so make sure not to overwater it. Water it only when the top inch of soil feels dry to the touch.- Fertilization: Achillea Atrata does not require much fertilization. You can apply a balanced, slow-release fertilizer in the spring.- Soil: This plant prefers dry, well-drained soils. If your soil is heavy, add sand or gravel to improve drainage.- Sunlight: Achillea Atrata prefers full sun but can also tolerate partial shade.- Hardiness Zones: This plant can grow in hardiness zones 3 to 9.
Common Pests & Diseases
Achillea Atrata is generally a hardy plant that is not prone to many pests and diseases. However, it can be affected by powdery mildew, rust, and fungal leaf spot. To prevent these diseases, make sure to plant your Achillea Atrata in well-drained soils and avoid overhead watering.
Habitat
Achillea Atrata is native to Europe and its surrounding areas, but it can now be found in many parts of the world. This plant prefers to grow in dry, well-drained soils and can be found in meadows, grasslands, and along roadsides.
Question and Answer
Q: Is Achillea Atrata a perennial plant?
A: Yes, Achillea Atrata is a perennial plant.
Q: How often should I water my Achillea Atrata plant?
A: Water your Achillea Atrata plant only when the top inch of soil feels dry to the touch.
Q: What is the best time to plant Achillea Atrata?
A: The best time to plant Achillea Atrata is in the spring or fall.
Q: How tall can Achillea Atrata grow?
A: Achillea Atrata can grow up to 60 cm tall.
Related Plants
Here are some plants that are related to Achillea Atrata:- Achillea Millefolium (common yarrow)- Achillea Ptarmica (sneezewort)- Achillea Filipendulina (fernleaf yarrow)- Achillea Clavennae (silvery yarrow)
References
– “Achillea atrata – Plant Finder.” Missouri Botanical Garden. Accessed April 14, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277259.- “Black Knapweed (Achillea atrata) | Online Atlas of the British and Irish Flora.” Online Atlas of the British and Irish Flora. Accessed April 14, 2021. https://www.brc.ac.uk/plantatlas/plant/achillea-atrata.
