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Facts About this Plant:
- Common Names: Butterweed, Cressleaf Groundsel, Yellowtop
- Synonyms: Senecio glabellus, Senecio lobatus
- Lifespan: Annual
- Zones: N/A
- Type: Forb
- Bloom Time: February - July
- Status: Native
Packera glabella, or Butterweed, is native to the southeastern, southern and central-midwestern United States. It is an annual that forms a basal rosette the fall before, and then blooms early in spring, and then dies away after setting seed. It grows in moist areas, particularly those that are wet in spring only; it can be found growing along roadsides, in ditches and especially in fields, where it frequently blooms and sets seeds before farmers even cultivate their fields. It can often be seen growing temporarily even in standing water. It tends to spread a lot by seed, and can produce massive stands of yellow flowers that are quite stunning.
This plant is most easily distinguished by the following features:
- Habitat: very wet conditions, even if only in spring
- The presence of a basal rosette the year before
- Leaves that resemble cress, with a large leaf on the end, and alternate leaves leading back to the stem.
- Stems that are completely smooth, and are hollow on the inside
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