Centaurea nigra | Knapweed, Cnapan Dubh. Originated in … Scotland | Various
Centaurea nigra belongs to the plant family ASTERACE and Genus Centaurea This plant specimen prefers Wet soil a pH of 7 . All plants need light to allow the photosynthesis process of converting carbon dioxide to growth sugars to take place. Some plants need more sun-light than others. For this plant those sunlight conditions are well described as … Full sun
We are often asked about plants for humming bird attraction. Unfortunately Centaurea nigra does not attract these beautiful hummingbird, sunbird or nectar feeding varieties of garden birds
Impressive Autumn foliage display is not shown by Centaurea nigra so look for an alternative plant for pleasing Fall leaf properties
Centaurea nigra knapweed,Cnapan Dubh is not known as a butterfly attracting plant
Almost all plants grown in gardens need to be fed using fertilzer in order to see them at their best. For this plant the suggested fertilizer program would be based upon … Typical mix of: 3 parts Nitrogen (N), 2 parts Phosphorous (P) and 3 parts Potassium (K for Latin name Kalium).
This whole plant has been used in traditional fabric dyeing. Yellow is the most typical color produced by Centaurea nigra. Knapweed has been used in the Outer Hebrides of Scotland for dyeing. It is used in dyeing wool. When dyeing with this plant, alum is used as a mordant to fix the color to the fabric. Centaurea nigra is known as Cnapan Dubh in Gaelic.
The Whole plant of Centaurea nigra can be used to produce a natural dye having the following color(s) … yellow
"Dye plants and dyeing -- a handbook", EthelJane McD. Schetky, editor, Brooklyn Botanic Garden, Brooklyn New York, 1964.
Centaurea scabiosa | Greater Knapweed | Various
Centaurea solstitialis | Yellow Star-Thistle | Various
Centaurea suaveolens | Sweet Sultans. Originated in Turkey | Various
"Xeriscape Gardening: Water Conservation for the American Landscape", Connie Lockhart Ellefson, Thomas L. Stephens, and Douglas Welsh, Macmillan Publishing Company, New York, 1992.