Assertion: maximillian sunflower | /r/AtLocation | usda zones
Facets:
value: through 9
type: TEMPORAL
Source sentences:
text: A few perennial varieties do exist, however, including the Maximillian sunflower (Helianthus maximilliani) that grows in U.S. Department of Agriculture plant hardiness zones 3 through 9, and the swamp sunflower (Helianthus angustifolius) found in USDA zones 6 through 9.