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Creeping thistle is a herbaceous perennial plant growing up to 150 cm, forming extensive clonal colonies from thickened roots that send up numerous erect shoots during the growing season. [14] It is a ruderal species. [15] Given its adaptive nature, Cirsium arvense is one of the worst invasive weeds worldwide. Through comparison of its genetic ...
Cirsium vulgare (spear thistle) is listed in the United States (where as a non-native invasive species it has been renamed "bull thistle") as a noxious weed in nine states. [6] Some species in particular are cultivated in gardens and wildflower plantings for their aesthetic value and/or to support pollinators such as bees and butterflies.
Cirsium vulgare, the spear thistle, bull thistle, or common thistle, is a species of the Asteraceae genus Cirsium, native throughout most of Europe (north to 66°N, locally 68°N), Western Asia (east to the Yenisei Valley), and northwestern Africa (Atlas Mountains).
Corn thistle – Cirsium arvense; Corn sow thistle – Sonchus arvensis; Creeping thistle – Cirsium arvense; Cursed thistle – Cirsium arvense; Field sow thistle – Sonchus arvensis; Green thistle – Cirsium arvense; Hard thistle – Cirsium arvense; Hare's thistle – Sonchus oleraceus; Milk thistle – Sonchus oleraceus; Nodding thistle ...
Milk thistle flowerhead Cirsium arizonicum, showing arachnoid cobwebbiness on stems and leaves, with ants attending aphids that might be taking advantage of the shelter. Thistle is the common name of a group of flowering plants characterized by leaves with sharp spikes on the margins, mostly in the family Asteraceae. Prickles can also occur all ...
A honey bee collecting nectar from an apricot flower.. The nectar resource in a given area depends on the kinds of flowering plants present and their blooming periods. Which kinds grow in an area depends on soil texture, soil pH, soil drainage, daily maximum and minimum temperatures, precipitation, extreme minimum winter temperature, and growing degre
Spear thistle Cirsium dissectum: Meadow thistle Cirsium tuberosum: Tuberous thistle Cirsium erisithales: Yellow thistle * Cirsium heterophyllum: Melancholy thistle Cirsium oleraceum: Cabbage thistle * Cirsium acaule: Dwarf thistle Cirsium palustre: Marsh thistle Cirsium arvense: Creeping thistle Onopordum acanthium: Cotton thistle Silybum ...
Cirsium heterophyllum, the melancholy thistle, [1] is an erect spineless herbaceous perennial flowering plant in the family Asteraceae. It is native to Europe and western Asia , where it grows in upland meadows, grasslands , road verges and open woodland.