Be aware of the growing colonies of invasive weeds such as black swallowwort. It looks like a vine as it grows, then a pretty purple flower appears and finally a pod full of seeds. While the seeds look somewhat like milkweed pods, they will kill monarch larva that hatch from eggs laid on these plants. Cut down the vines before the flowers ripen into seeds. Weed whackers, or clippers for small stands, mower for larger ones. But beware-- they will re-sprout. Just keep cutting them until they don’t return. Or in your garden, dig out the root mass, bag it and leave it in the sun to kill. Do not compost or throw any swallowwort into other areas.
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