Research links dwindling number of monarch butterflies to loss of milkweed

A University of Minnesota researcher finds the shrinking number of monarch butterflies is tied to the disappearance of the weed where they lay their eggs. Herbicides are eradicating milkweed from farm fields. Now researchers are encouraging the planting of milkweed in other areas to help the state insect.
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A University of Minnesota researcher finds the shrinking number of monarch butterflies is tied to the disappearance of the weed where they lay their eggs. Herbicides are eradicating milkweed from farm fields. Now researchers are encouraging the planting of milkweed in other areas to help the state insect.

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