Once I arrived home and unpacked the car, I started working with the flowerheads. By following the instructions here, I steeped the blossoms and made this beautiful liquid.
The next day I added the lemon juice, sugar, and pectin, then gave it all a water bath to complete the porcess. My reward is five of these:
(My photo, taken in the morning sunshine, doesn't do the rosy pink color justice.)
The violets we picked were a mix of lavender, blue, and white. A higher percentage of deeper color would make a darker jelly. But the flavor is just as good no matter what color combination is used! Since this batch turned out well (and easy!), next year there will be lots more. Four of these five jars are going back to my grandchildren.
These were picked from a yard where no pesticides are used, and far enough away from the road to be safe from winter salt/chemicals.
Please don't ever pick, or try to eat any flower/plant that you are not absolutely sure is safe. When in doubt, pass it by!