Knapweed
By Sanmcgill
Knapweed (Centaurea) - Perennial or annual herbs inhabiting S. and Middle Europe, some being good garden plants, most of them hardy.
Knapweed
Centaurea Phoenix Hybrids
Genus: Centaurea
Cultivar: Phoenix Hybrids ...
- Knapweed, Star thistle
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The fluffy cornflower style blooms of this knapweed are rose purple with white centres.
Common Knapweed
Characteristics
Identfied by its slender leaves this knapweed is often seen isolated on grassland and scrub that is not grazed.
Spotted Knapweed
Centaurea maculosa Lam.
Synonym: C. biebersteinii
Family: Asteraceae, Aster or Composite
Genus: Centaurea ...
Spotted Knapweed
Centaurea biebersteinii (Centaurea stoebe, Centaurea maculosa) ...
Knapweed Invaders
The difference between wildflowers, uninvited cultivars arriving as volunteers, & an outright weed is occasionally a matter of perspective.
Knapweed, Black
(Centaurea nigra LINN.)
Click on graphic for larger image
Knapweed, Black ...
Spotted Knapweed
Scientific name: Centaurea stoebe L. subsp. micranthos (Gugler) Hayek
Synonyms: Centaurea biebersteinii auct., Centaurea maculosa auct. Amer., Centaurea maculosa subsp. micranthos Gugler (basionym) ...
Mountain Knapweed
Scientific Name: Centaurea montana L.
Synonym:
Family: Asteraceae ...
Star Thistle, Knapweed, Persian Cornflower
Easy to grow, this member of the daisy family is good for borders or wild gardens. Most annual types are grown for their frilly, cuttable flowers, and perennials for their felty, gray foliage.
BACKGROUND: Spotted knapweed was introduced to North America from Eurasia as a contaminant in alfalfa and possibly clover seed, and through discarded soil used as ship ballast.
Common name: Bighead Knapweed, Yellow Hardhead, Giant Knapweed, Armenian Basketflower, Lemon Fluff Knapweed
Botanical name: Centaurea macrocephala Family: Asteraceae (Sunflower family) ...
( Giant knapweed )
C. macrocephala is a perennial with a clump-forming habit. The flowers are borne from thistle or artichoke type buds and open brilliant yellow. These plants are attractive to bees and butterflies, and are good cut flowers.
45 (70)cm, Great Knapweed has nice purple, large Scabiosa like flowers. Full sun to partial shade in any well drained soil. VII-VIII.
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Giant knapweed [shown on previous page] (Centaurea macrocephala) A boisterous biggie with fat, thistle-like flower heads; spiky, cheery yellow petals; 1.5 m, Zone 3 ...
This is the knapweed that appears at the gardens at Chelsea Flower Show every year.
Russian knapweed (Acroptilon repens)
Russian-olive (Elaeagnus angustifolia)
Salt cedar (Tamarix chinensis, T.parviflora, and T. ramosissima)
Scentless chamomile (Matricaria perforata)
Scotch thistle (Onopordum acanthium) ...
These are: Lychnis coronaria, a campion in the family Caryophyllaceae; and six other species in the Asteraceae: Chrysanthemum ptarmiciflorum; three knapweeds: Centaurea cineraria, C. gymnocarpa, and C.
Centaurea repens.Russian Knapweed. Russian knapweed is an invasive weed imported from Eurasia. For more information and additional pictures, go to Russian knapweed ecology and control.
Centaurea cyanus. Bachelor's Buttons.
Accidentally introduced to the United States as a contaminant in crop seed, Hardheads, or Russian Knapweed, is classified as a noxious weed in dozens of states and four Canadian provinces.
Nombres relacionados: Asteraceae (familia), Black Knapweed (inglés), Centaura negra (castellano), Lesser knapweed (inglés).
Indicaciones, contraindicaciones: Diurético, sudorífico, tónico.
VOLVER AL ÍNDICE ...
Established summer-flowering meadows: Don't mow until late August or September, after wildflowers such as knapweed, devil's bit scabious and lady's bedstraw have set seed.
Centaurea (knapweed), Helianthus annuus (domestic sunflower), and some species of Solidago (goldenrod) are major "honey plants" for beekeepers. Solidago produces relatively high protein pollen, which helps honey bees overwinter.[citation needed] ...
Centaurea maculosa (Compositae) - I recently saw a potted spotted knapweed for sale for $9.95 (next to the cut goldenrod)...One person's weed... Blooms mid to late summer. (Photographed in WI) ...
Centaurea macrocephala
(Giant knapweed, Yellow hardhead) Be the first to rate this plant
Hardiness Zones:
1 ...
Description:
The ray flowers of the various species of Cornflower (also known as Bachelor's Buttons, Bluets, Centaureas, and Knapweeds) are deeply divided, giving the showy flowers a very frilled appearance.
 See also: Centaurea, Green, Thistle, Aster, Grass
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