Assertion: milkweed | /r/CapableOf | grow in hardiness zones 3
Facets:
value: through 9
type: TEMPORAL
Source sentences:
text: A standby in the butterfly garden, milkweed (Asclepias syriaca), which grows in U.S. Department of Agriculture plant hardiness zones 3 through 9, provides the sole food source for monarch butterfly caterpillars.