Posted 3/30/2020 01:48 (#8150768 - in reply to #8150307) Subject: RE: Snapdragons and Periwinkle. Plant Together?
NW Washington
I checked the Clemson link I posted earlier and found out that there is a different plant that is called periwinkle too. This one, officially, Catharanthus_roseus
looks like what you have planted. I learned something new today. This link is about this periwinkle.