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Cirsium muticum

Common Name(s):

Phonetic Spelling
SIR-see-um mu-tee-kum
Description

Swamp Thistle is a native biennial that forms basal leaves during the first year, followed by the flowering stem in the second year. It is found in swamps, wet woods, and thickets and prefers sandy soil. This thistle has fewer spines than some. 

This is a high-value nectar plant and supports many bees and butterflies. Birds love the seeds.

Cultivars / Varieties:
Tags:
#bees#wildlife plant#nectar plant#specialized bees#NC native#pollinator plant
 
Cultivars / Varieties:
Tags:
#bees#wildlife plant#nectar plant#specialized bees#NC native#pollinator plant
  • Attributes:
    Genus:
    Cirsium
    Species:
    muticum
    Family:
    Asteraceae
    Life Cycle:
    Biennial
    Country Or Region Of Origin:
    Canada to U.S.A
    Wildlife Value:
    Members of the genus Cirsium support the following specialized bees: Melissodes (Heliomelissodes) desponsus, Osmia (Helicosmia) chalybea and Osmia (Helicosmia) texana. Birds eat the seeds.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Wildflower
  • Fruit:
    Fruit Type:
    Achene
    Fruit Description:
    Small achenes with tufts of white hair.
  • Flowers:
    Flower Color:
    Pink
    Purple/Lavender
    Flower Inflorescence:
    Head
    Flower Bloom Time:
    Fall
    Summer
    Flower Shape:
    Dome
    Flower Description:
    Rose-purple flower heads are a dense cluster of numerous disk florets up to 2.5 inches wide on a hollow flowering stem. The sticky bracts are not tipped with spines. Blooms late summer to fall.
  • Leaves:
    Leaf Color:
    Green
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Rosulate
    Leaf Shape:
    Elliptical
    Obovate
    Ovate
    Pinnatifid
    Leaf Margin:
    Lobed
    Hairs Present:
    Yes
    Leaf Length:
    > 6 inches
    Leaf Width:
    3-6 inches
    Leaf Description:
    Rosette of long-stalked, deeply incised leaves up to 16 inches long and 4 inches across. they are pinnately cut into broad prickly segments with webby hairs beneath.
  • Stem:
    Stem Color:
    Green
    Stem Is Aromatic:
    No
    Stem Cross Section:
    Round
    Stem Surface:
    Hairy (pubescent)
    Stem Description:
    Green finely grooved stems
  • Landscape:
    Attracts:
    Butterflies
    Pollinators
    Specialized Bees