Pinch off the green stems and calyxes from your 1 cups wild violet flowers (packed, petals only). Give them a gentle swish in a bowl of cool water to knock off any dirt or tiny bugs, then lay them on a towel to dry.
Bring 1.5 cups water to a boil, then take it off the heat. Let it sit for a minute or two so it stops bubbling. Pour the hot water over the violet petals in a heat-safe jar or bowl. Cover and let steep.
Pour the violet tea through a fine-mesh strainer into a small saucepan. Press the soggy flowers with the back of a spoon to squeeze out every last drop of that blue-purple liquid. Toss the spent petals.
Add 1 cups white granulated sugar to the violet tea. Warm over medium-low heat, stirring until the sugar dissolves completely. This takes about two minutes. Don't let it boil.
Here's the fun part. Your syrup is probably a deep blue right now. Add 0.3 teaspoons fresh lemon juice (optional, for color) one drop at a time, stirring after each. Watch it shift through purple toward pink. Stop when you like what you see. Or skip this step entirely and save the color magic for when you mix drinks.
Pour the syrup into a clean glass jar or bottle. Let it cool to room temperature, then refrigerate.