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MSU Turf — your lawn weed identification & research resource

Asteraceae (Aster) Family

formerly Composite or Compositae

The Asteraceae family is a very large family of plants; characterized by having flowers in a head; flowers (usually termed florets) are typically of two types, inner florets termed disc or tubular florets and outer florets termed ray or ligulate florets. Many plants in this family have vegetative parts that grow in rosettes (clumps).

Bull Thistle
Cirsium vulgare

Canada Thistle
Cirsium arvense

Cichorium intybus

Taraxacum officinale

English Daisy
Bellis perennis


Orange Hawkweed
Hieracium aurantiacum

Perennial Sowthistle
Sonchus arvensis

Yarrow, Common
Achillea millefolium

Yellow Hawkweed
Hieracium pratense

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