| Date | Location | Notes | Images |
|---|---|---|---|
| August 9, 2009 | Southeastern, New Hampshire | Many tiny white 5-petal flowers forming a flatish cluster at the top of the plant. Stem is hairy. Finely-dissected, lanceolate leaves on the stem. “Millefolium” means thousand-leaf in reference to its fern-like foliage. Leaves have a pleasant, fern-like odor when crushed. |
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| Date | Location | Notes | Images |
|---|---|---|---|
| June 18, 2010 | Southeastern, New Hampshire |
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| Date | Location | Notes | Images |
|---|---|---|---|
| May 8, 2014 | Southeastern, Connecticut |
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| Date | Location | Notes | Images |
|---|---|---|---|
| June 7, 2014 | Central, Connecticut |
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| Date | Location | Notes | Images |
|---|---|---|---|
| July 16, 2023 | Sandia Mountains, New Mexico | They call this Western Yarrow in New Mexico. |
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