Harvest 2 cups of wild violet flowers. Choose only blossoms that are free from pesticides. If using a mason jar, harvest the flowers directly into the jar, about halfway full.
Pour 4 cups of boiling water over the violet flowers. Let steep for 15-20 minutes. The tea will likely be a greenish or turquoise color initially.
Stir in 1/4 cup of lemon juice (or 1/2 tsp citric acid) to the violet tea. The color will change from turquoise to a vibrant pink.
Strain out the flowers, then pour the tea into a large saucepan. Add the powdered pectin and bring the mixture to a boil. Boil for 1 minute.
Stir in 4 cups of sugar, then bring the mixture back to a boil. Boil for 1 more minute, until the jelly begins to thicken.
Test the jelly by placing a spoonful on a chilled plate. If it wrinkles when you push it with your finger, it’s ready to jar.
Ladle the hot jelly into sterilized jars, leaving 1/4 inch headspace. Wipe the rims of the jars clean.
Seal the jars with two-part canning lids. Process in a water bath canner for 10 minutes (or 15 minutes if above 6,000 feet in elevation). If you’re not canning, store in the fridge for up to 3 weeks.
After processing, remove the jars and allow them to cool. You’ll hear the lids pop as they seal. Store the jars in a cool, dark place for up to a year.