I have wild yarrow growing in the sunny parts of my property. This is MT where it can plummet to Way below zero and gets down to zero every winter. Usually there is a decent layer of snow. Also my cousin in MN has it in her flower beds; she can get extended periods of -20 to -30f. Her gardens border a grove of hardwood trees so they get some random mulch but still… yarrow can take the cold!
I have wild yarrow growing in the sunny parts of my property. This is MT where it can plummet to Way below zero and gets down to zero every winter. Usually there is a decent layer of snow. Also my cousin in MN has it in her flower beds; she can get extended periods of -20 to -30f. Her gardens border a grove of hardwood trees so they get some random mulch but still… yarrow can take the cold!