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This image provided by Jessica Damiano shows a redtwig dogwood cutting planted in a container on Long Island, New York. (Jessica Damaino via AP)

This image provided by Jessica Damiano shows a redtwig dogwood cutting planted in a container on Long Island, New York. (Jessica Damaino via AP)

This image provided by Jessica Damiano demonstrates the use of bypass pruners to take a hardwood cutting from a redtwig dogwood shrub on Long Island, New York. (Jessica Damaino via AP)

This image provided by Jessica Damiano demonstrates the use of bypass pruners to take a hardwood cutting from a redtwig dogwood shrub on Long Island, New York. (Jessica Damaino via AP)

This image provided by Jessica Damiano shows a newly collected redtwig dogwood cutting with its top edge cut on the diagonal on Long Island, New York. (Jessica Damaino via AP)

This image provided by Jessica Damiano shows a newly collected redtwig dogwood cutting with its top edge cut on the diagonal on Long Island, New York. (Jessica Damaino via AP)