Centaurea jacea
TAXONOMY
FamilyAsteraceae
GenusCentaurea
Zone4
LEARN MORE
Plants of the World OnlineABOUT
Centaurea jacea, commonly known as brown knapweed or brownray knapweed, is a perennial plant in the family Asteraceae. It is native to Europe and prefers temperate climates. The plant produces purple to pink flowers and is often found in meadows, pastures, and along roadsides. It has a dormancy period during the winter months.
ALSO KNOWN AS
Brown Knapweed
Centaurea jacea f. jacea
Centaurea jacea f. majuscula
Centaurea jacea f. scopulicola
Centaurea jacea subsp. jungens
Centaurea jacea subsp. lusitanica
Centaurea jacea var. jacea
Centaurea lusitanica
Centaurea pratensis
Centaurea variabilis
Jacea pratensis
Rhaponticum jacea
OVERVIEW
VPDCalculate
WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Centaurea jacea thrives in bright, direct sunlight and moderate temperatures. It prefers moderate humidity levels and should be watered when the soil partially dries out. The plant is relatively easy to care for and can tolerate a range of conditions, making it suitable for outdoor growth.Soil
This plant prefers well-draining loam soil with a slightly acidic to neutral pH. Ensure the soil has good drainage to prevent waterlogging, which can harm the plant. A mix of garden soil with some sand and organic matter works well.Fertilizer
Centaurea jacea benefits from a balanced fertilizer with a nutrient composition of 5-10-10. Fertilize the plant in the spring and mid-summer to support its growth and flowering. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowers.Repotting
Repotting is generally not necessary for Centaurea jacea, as it is typically grown outdoors. However, if grown in a container, repot the plant every 2-3 years to refresh the soil and provide more space for root growth. Repot in the early spring before new growth begins.Propagation
Centaurea jacea can be propagated by seed or division. Sow seeds in the spring or fall, directly in the garden or in seed trays. For division, separate the plant clumps in early spring or late fall, ensuring each division has a healthy root system.Pruning
Pruning is beneficial for Centaurea jacea to encourage bushier growth and more flowers. Deadhead spent flowers regularly to promote continuous blooming. Cut back the plant in late fall after the first frost to prepare it for dormancy.Toxicity
Centaurea jacea is not known to be toxic to pets or humans. It is generally considered safe to grow in gardens where pets and children are present.Additional
Centaurea jacea is a great addition to wildflower gardens and meadows, attracting pollinators such as bees and butterflies. It is also deer-resistant, making it a good choice for areas with wildlife.REVOLUTIONIZE YOUR PLANT CARE
Make Every Plant Smart
Plant Monitor
STAYS IN YOUR PLANT
Accurately measures the core metrics of your plant – soil moisture, light, temperature and humidity - as well as compound metrics such as Vapor Pressure Deficit (VPD) and Growing Degree Days (GDD).
Shop Now
