What is the plant
Artemisia ludoviciana is a North American species in the daisy family, known by several common names silver wormwood, western mugwort, Louisiana wormwood, white sagebrush, and gray sagewort. Ludoviciana is the Latinized version of the word Louisiana.
Artemisia ludoviciana is a rhizomatous perennial plant growing to heights between 0.33–1 metre (1.1–3.3 ft). The stems bear linear leaves up to 11 centimeters long. The stems and foliage are covered in woolly gray or white hairs. The top of the stem is occupied by a narrow inflorescence of many nodding (hanging) flower heads. Each small head is a cup of hairy phyllaries surrounding a center of yellowish disc florets and is about half a centimeter wide. The plant is native to North America where it is widespread across most of the United States, Canada, and Mexico. Artemisia ludoviciana is cultivated as an ornamental plant. Being rhizomatous, it can spread aggressively in some climates and gardens.
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