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Centaurea cyanus
Centaurea cyanus
Centaurea cyanus
Centaurea cyanus

Centaurea cyanus

TAXONOMY

FamilyAsteraceae
GenusCentaurea
Zone3

ABOUT

Centaurea cyanus, commonly known as cornflower or bachelor's button, is an annual flowering plant in the family Asteraceae. Native to Europe, it is often found in temperate climates and is known for its vibrant blue flowers. Historically, it was a common sight in cornfields, hence the name 'cornflower'.

ALSO KNOWN AS

Bachelor's Button
Cornflower
Jacea Segetalis
Jacea Segetum
Centaurea concinna
Centaurea cyaneum
Centaurea cyanocephala
Centaurea cyanus subsp. coa
Centaurea cyanus subsp. cyanus
Centaurea cyanus var. cyanus
Centaurea cyanus var. denudata
Centaurea hortorum
Centaurea lanata
Centaurea pulcherrima
Centaurea pulchra
Centaurea rhizocephala
Centaurea segetalis
Centaurea umbrosa
Cyanus arvensis
Cyanus cyanus
Cyanus dentato-folius
Cyanus segetum
Cyanus vulgaris
Leucacantha cyanus
Setachna cyanus

OVERVIEW

WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature18° C
Humidity50%
pH6.5
Pressure1,013 mbar

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DETAILS

Care Instructions
Centaurea cyanus is relatively easy to care for. It thrives in full sun and prefers moderate temperatures. Water the plant when the soil is almost dry, and ensure it has good air circulation. It can tolerate a range of humidity levels but prefers moderate humidity.
Soil
This plant prefers well-draining loamy soil. It can tolerate poor soil conditions but will perform best in moderately fertile soil. Ensure the soil dries out almost completely between waterings to prevent root rot.
Fertilizer
Fertilize Centaurea cyanus with a balanced fertilizer, such as 5-10-10, once a month during the growing season. Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowers.
Repotting
As an annual plant, Centaurea cyanus does not require repotting. However, if grown in containers, ensure the pot has good drainage and consider refreshing the soil each growing season.
Propagation
Centaurea cyanus is easily propagated by seeds. Sow the seeds directly in the garden in early spring or start them indoors a few weeks before the last frost. Thin the seedlings to allow enough space for growth.
Pruning
Pruning is not necessary for Centaurea cyanus. However, deadheading spent flowers can encourage more blooms and extend the flowering period.
Toxicity
Centaurea cyanus is not toxic to pets or humans. It is generally considered safe and non-toxic.
Additional
Centaurea cyanus is a great addition to wildflower gardens and can attract pollinators such as bees and butterflies. It is also commonly used in floral arrangements due to its striking blue flowers.
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