Antonyms for common knapweed. It’s a tall, branching plant that can grow up to 75cm. With its lobed leaves, greater knapweed bears a slight resemblance to red-flowered thistles (Cirsium), although its lack of spines makes it easy to tell apart. Plant Information. Cultivation. Greater knapweed - definition of greater knapweed by The Free Dictionary. Centaurea scabiosa (Greater knapweed) will reach a height of 1m and a spread of 0.5m after 2-5 years.. greater knapweed General Information; Symbol: CESC2 Group: Dicot Family: Asteraceae ... Perennial: Growth Habit: Forb/herb: Native Status: CAN I L48 I: Other Common Names: greater centaury scabious knapweed Data Source and Documentation: About our new maps. The flowering heads have flowers with corollas that are rose-purple, which is similar to C. maculosa. This larger species of Knapweed was in olden times called 'Matte Felon,' from its use in curing felons or whitlows. It is ideal in poor soil as if the soil is too fertile, it can become too leafy! Knapweeds are native perennials growing 30-60 cm in height and produce purple flowers from June to August. Range: Much of Europe, including Britain, north to 68° N., east to the Caucasus and W. Asia. www.nearbywild.org Just a few of the many insects that feed on Knapweed (Common Knapweed and Greater Knapweed in this clip). It is in bloom from June to September and is a huge favourite of all kinds of butterflies including Common Blues, Marbled Whites and Meadow Browns, and is sometimes covered in these species. Its flowers are slightly larger and have extended heads, although the main difference between the two are the habitats they enjoy; Greater knapweed is more a flower of taller, less managed swards. This plant has several different names depending on where you live it will be known as the Common Knapweed, the Lesser Knapweed and the Black Knapweed; but all refer to the same plant, Centaurea nigra.It looks a little like a thistle but without thorns, and grows to around 70 centimetres tall in the UK where it is a common sight in grassland, along grass verges and amongst crops. With its large, purple, thistle like flower heads Greater knapweed looks a little like the rayed form of Common knapweed but with larger flower heads and different habitat requirements (for more information check out the Common knapweed page). The purple thistle-like flowers are held above slightly hairy foliage all summer. 10 words related to knapweed: slender knapweed, Jersey knapweed, centaury, black knapweed, Centaurea nigra, hardheads, lesser knapweed, Centaurea scabiosa.... What are synonyms for common knapweed? It commonly grows in dry chalky grasslands, roadsides, hedgerows and cliffs throughout the UK and Ireland, although more prominently in England. Common Blue Butterfly, Polyommatus icarus, nectaring on Common or Black Knapweed, Centaurea nigra, Sandwich, Kent UK Meadow brown butterfly (Maniola jurtina) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, UK, June. Greater Knapweed Centaurea scabiosa.. C. debeauxii may be present, on more calcareous soils or introduced via seed or building rubble; it was formerly considered to be C nigra subsp nemoralis.. Centaurea jacea (Brown Knapweed) has brown phyllaries and is a very rare alien species. Common names include Black Knapweed, Black Top, Churls Head, Hardhead, Ironhead, Hard Irons, Logger Head, Horse Knops, Bottleweed, and Bullweed. Suggested uses. Greater Knapweed (Centaurea scabiosa) Greater knapweed, Centaurea scabiosa, shares the many attractions of Lesser, or Common knapweed. 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