| Date | Location | Notes | Images |
|---|---|---|---|
| October 11, 2010 | Southeastern, New Hampshire |
|
| Date | Location | Notes | Images |
|---|---|---|---|
| August 6, 2011 | Southeastern, New Hampshire | Northern Arrowwood has smooth twigs while Southern Arrowwood has downy twigs and flower clusters. |
|
| Date | Location | Notes | Images |
|---|---|---|---|
| June 23, 2012 | Southeastern, New Hampshire |
|
| Date | Location | Notes | Images |
|---|---|---|---|
| June 2, 2014 | Southern, Connecticut |
|