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Cutting back milkweed after it blooms #878344

Asked July 22, 2024, 8:41 PM EDT

I've heard that it's okay, even a good idea, to cut back milkweed after it blooms. Would I be potentially harming butterflies if I cut it back now?

Hennepin County Minnesota

Expert Response

Now is not a good time to cut back milkweed.  Monarchs will produce a couple more generations yet this summer. Monarch larvae only eat milkweed leaves.  Monarchs will need the milkweed until they migrate in fall.  
I cut mine back in late October after a couple of freezes.  That is also a good time to collect seed for planting in the fall or next spring. Cutting it back in late fall will also decrease the spread into other areas of the garden.

1.https://www.dnr.state.mn.us/insects/monarchbutterfly.html

2.  https://extension.psu.edu/monarchs-and-milkweed/
MaryKay, Master Gardener, Tree Care Advisor Replied July 23, 2024, 12:43 PM EDT

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