Centaurea acaulis
TAXONOMY
FamilyAsteraceae
GenusCentaurea
Zone6
LEARN MORE
Plants of the World OnlineABOUT
Centaurea acaulis, commonly known as the stemless knapweed, is a perennial plant in the Asteraceae family. It is native to the Mediterranean region and is known for its rosette of spiny leaves and large, thistle-like flowers. The plant undergoes a dormancy period during the winter months.
ALSO KNOWN AS
Cestrinus Carthamoides
Cynara Humilis
Menomphalus Chouletteana
Stemless Knapweed
Amblyopogon balansae
Centaurea acaulis subsp. acaulis
Centaurea acaulis subsp. balansae
Centaurea acaulis var. acaulis
Centaurea acaulis var. balansae
Centaurea balansae
Centaurea chamaerhaponticum
Centaurea choulettiana
Centaurea nidulans
Centaurea pharaonis
Colymbada acaulis
Colymbada balansae
Menomphalus acaulis
Serratula acaulis
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Centaurea acaulis thrives in bright, direct sunlight and prefers moderate temperatures. It should be watered sparingly, allowing the soil to dry out almost completely between waterings. The plant does well in moderate humidity and should be protected from extreme cold.Soil
Centaurea acaulis prefers well-draining loam soil with a slightly acidic to neutral pH. Good drainage is essential to prevent root rot, so a soil mix that includes sand or perlite can be beneficial.Fertilizer
A balanced fertilizer with a nutrient composition of 5-10-10 can be applied during the growing season. Fertilize sparingly, as the plant does not require high nutrient concentrations.Repotting
Repot Centaurea acaulis every 2-3 years or when it outgrows its container. Choose a pot that is slightly larger than the current one and ensure it has good drainage. Repotting is best done in the spring.Propagation
Centaurea acaulis can be propagated by seed or division. Seeds should be sown in the spring, while division can be done in the fall or early spring. Ensure that each division has a healthy root system.Pruning
Pruning is necessary to maintain the plant's shape and encourage new growth. Remove dead or damaged leaves and spent flowers regularly. Pruning is best done in the spring or after the flowering period.Toxicity
Centaurea acaulis is not known to be toxic to pets or humans. However, it is always advisable to handle plants with care and wash hands after gardening.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
