My spinach patch and other parts of the garden are full of newly sprouted sunflower seedlings. Weeds, of course, because I don't want them there. I picked one, nibbled it, and it tasted just like a sunflower kernel. Yum! My question is twofold: are sunflowers among edible sprouts (like alfalfa, etc.), and if so, are they perfectly OK to harvest, even if I didn't plant them or know the source? I guess a third question, based on these two: what size or other guidelines for harvest? (I've grown sunflowers enough to recognize their seedlings.) Typing this seems so silly. If the end product is edible, the other parts should be, right? But do we eat strawberry leaves?