Flower/fruit:
1
inch flower heads; numerous bright blue rays
Flowering
Season: Summer, fall
Foliage:
Upright, rigid branches; lower
leaves are 3 to 6 inches long, variously toothed, cut on lobes and
tapering into long stalks; the upper leaves are smaller and have
clasping bases
Site:
Tolerates dry, poor soil; sun; fields and roadsides
Comments:
Introduced from Europe; roots
can be used to make a coffee substitute
