Find essential tips for growing centaurea, a genus including mountain bluet, which blooms in late spring and early summer. Centaurea (/ ˌsɛntɔːˈriːə /) [1] is a genus of over 700 species of herbaceous thistle -like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich.

Understanding the Context

Centaurea mix well with most other garden plants, if you take into account their propensity to spread and give them sufficient room. They look particularly good in a naturalistic planting with other meadow or prairie plants. The Centaurea genus is part of the Asteraceae family and is native to the Old World. This diverse genus includes well-known species like the Cornflower and Bachelor's Button, beloved for their thistle-like flowers that bloom in a variety of colors.

Key Insights

Learn how to grow Centaurea from seed for bedding or cut flowers: sowing, days to germination, transplanting, light/soil preferences, hardiness, and harvesting. Centaureas are used for the perennial border, for pots, baskets, and the rock garden. The Golden Knapweed is the largest flowered sort and is most attractive planted among shrubs. Most of these plants produce long stemmed and lasting flowers which are admirable for cutting. Centaurea, genus of about 500 species of herbaceous plants of the composite family (Asteraceae).

Final Thoughts

Most are native to the Old World and chiefly centred in the Mediterranean region. Although these Centaurea varieties represent different species, they share remarkably similar cultural requirements. Their sizes vary significantly, with Bachelor Buttons being the smallest, Sweet Sultan falling in the middle, and American Basket Flower standing out as the largest.