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Description
Centaurea Pectinata, commonly known as comb knapweed, is a species of flowering plant that belongs to the sunflower family. It is native to Europe and Asia but has been introduced to North America, where it is considered a noxious weed in some areas. It is an annual or biennial plant that can grow up to 3 feet tall and 2 feet wide. The plant blooms from June to September and produces purple flowers that resemble thistles.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Centaurea |
Appearance
The plant has fern-like leaves that are gray-green in color and can grow up to 8 inches long. The leaves are deeply lobed and have toothed edges. The stem is erect, hairy, and branched. The flowers are 1-2 inches wide and have purple petals that form a tubular shape. The center of the flower is yellow and has many small, spiny bracts that resemble combs.
Care Guide
Centaurea Pectinata is a hardy plant that requires minimal maintenance. It prefers well-draining soil and full sun exposure. The plant is drought-tolerant and does not need frequent watering. However, it can benefit from occasional fertilization with a balanced fertilizer. The plant is hardy in USDA Hardiness Zones 4-9.
Common Pests & Diseases
Centaurea Pectinata is generally pest and disease-resistant. However, it can be susceptible to aphids, spider mites, and root rot if overwatered. These issues can be prevented by avoiding overwatering and using an insecticide or fungicide as necessary.
Habitat
Centaurea Pectinata is native to Europe and Asia but has been introduced to North America, where it is found in disturbed areas, roadsides, and fields. It can grow in a variety of soil types and is tolerant of dry and hot conditions.
Question and Answer
Q: Is Centaurea Pectinata invasive?
A: Yes, Centaurea Pectinata is considered invasive in some areas of North America.
Q: How often should Centaurea Pectinata be fertilized?
A: Centaurea Pectinata can benefit from occasional fertilization with a balanced fertilizer.
Q: What is the hardiness zone for Centaurea Pectinata?
A: Centaurea Pectinata is hardy in USDA Hardiness Zones 4-9.
Q: What pests and diseases can affect Centaurea Pectinata?
A: Centaurea Pectinata can be susceptible to aphids, spider mites, and root rot if overwatered.
Related Plants
- Centaurea Cyanus
- Centaurea Montana
- Centaurea Nigra
- Centaurea Scabiosa
References
- “Centaurea Pectinata.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=278022&isprofile=0&cv=5.
- “Centaurea Pectinata L.” Plants of the World Online, Kew Science, powo.science.kew.org/taxon/urn:lsid:ipni.org:names:190679-1.
- “Centaurea Pectinata.” USDA Plants Database, plants.usda.gov/core/profile?symbol=CEPE5.
