Several years ago, i planted a seed packet that i found in a drawer at my father's house after he died--the name now lost to me in the mists of time. This miniature lettuce--about 2 inches tall--has reseeded itself for over a decade.
Now while temperatures are warm during the day and flirting with freezing at night, it is ready to bolt.
This "lettuce-let" has spread its seed outside the garden fence to an adjacent strip bed. Since i'm planting there, i harvested the small greens rather than weed it out. What a delightful salad green, with no trace of bitterness.
We can also harvest the results of our own wholesome actions and find them sweet to taste.