Polygonum tinctorium plants at the Farm Alliance Black Butterfly Teaching Farm Dear Indigo Shade Map Friends, I hope your summer is off to a wonderful start! I’m excited to share some meaningful news as we prepare for our first indigo harvest of 2025. For the past five years, I’ve been carefully refining the process of extracting pigment from Polygonum tinctorium (jjok, 쪽)—indigo plants lovingly grown at Blue Light Junction in Baltimore. This plant not only connects me to the