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Eutrochium purpureum, commonly known as purple Joe-Pye weed [4] or sweetscented joe pye weed, [5] is an herbaceous perennial plant in the family Asteraceae. It is native to eastern and central North America , from Ontario east to New Hampshire and south as far as Florida , Louisiana , and Oklahoma .
It is an annual plant with purple flowers, and it has been introduced outside of its native range as an ornamental plant, and is now largely considered an invasive weed in these regions. [ 1 ] [ 2 ] In the past, several botanists have mistakenly applied the scientific name of the purpletop vervain , V. bonariensis , to this species. [ 3 ]
Thomas Nuttall (1786-1859) described var. megacanthum as "one of the most terribly armed plants in the genus." [ 8 ] [ 9 ] Cirsium horridulum is a biennial herb up to 250 centimetres (100 in) tall, with a large taproot and fleshy side roots that sometimes sprout new shoots.
It produces pink or purple flowers primarily in the spring, but can bloom anytime throughout the growing season. [5] Its leaves are finely dissected, into segments that are 1–4 mm wide. It can be distinguished from the similar-looking Verbena tenera by its long flower bracts, and wider leaf segments.
With springtime in full bloom, both beautiful flowers and unwanted weeds are sprouting up all around Oklahoma. While most weeds are harmless, there are several plants in Oklahoma known to cause ...
Asclepias purpurascens, the purple milkweed, is a herbaceous plant species. It is in the genus Asclepias , making it a type of milkweed . It is native to the Eastern , Southern and Midwestern United States similar to the range of the common milkweed ( Asclepias syriaca ).
Each individual flower lasts one day. The middle of the head blooms first and then the upper and lower parts. The fruit is an achene just under a centimeter long. [2] The plant reproduces only by seed. [3] This teasel may be distinguished from its relative, common teasel (Dipsacus fullonum) by flower color and leaf shape. Cutleaf teasel has ...
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related to: oklahoma weedy plant with tiny purple flowers annual list