Butterweed (Packera Glabella Formerly Senecio Glabellus)

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Butterweed (Packera glabella formerly Senecio glabellus) For definitions of botanical terms, visit en.wikipedia.org/wiki/Glossary_of_botanical_terms. Butterweed is an herbaceous annual that produces a conspicuous and striking mass of bright yellow blooms. Both disk and ray florets are yellow to golden. The bright green stem is hollow and glabrous. Leaves are dissected with rounded lobes. They are alternately arranged and get smaller as they move up the stem. Seeds are borne in brown achenes. Butterweed first appears in fall or winter as a basal rosette. Before it blooms, it is sometimes confused with mustard, as both have multi-lobed and rounded leaves. The composite flowers of Butterweed, however, clearly identify it as a member of the aster Photo by Lisa Roberts family and not the mustard (Brassicaceae) family. And unlike mustard, butterweed can be toxic if eaten. Butterweed is one of the first wildflowers to bloom in early spring. It grows in dense stands that illuminate moist roadsides and river edges. It also occurs naturally in alluvial forests and wet, disturbed sites. Butterweed attracts a variety of pollinators. Family: Asteraceae (Aster, daisy or composite family) Native range: Nearly throughout To see where natural populations of Butterweed have been vouchered, visit www.florida.plantatlas.usf.edu. Hardiness: Zones 7–11 Soil: Moist to inundated or seasonally flooded soils Exposure: Partial shade to full sun Growth habit: 3’+ tall Propagation: Seed Garden tips: Unlike other species of Packera, butterweed is not commercially available. It is easily propagated from seed, however, if collected when ripe and sown immediately.* Favorable soil conditions (not too dry) must be maintained for butterweed to thrive. *Be sure to get permission before collecting seed on private property. Florida Wildflower Foundation • 225 S. Swoope Ave., Suite 110, Maitland, FL 32751 • 407-622-1606 • www.FlaWildflowers.org.

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