This proverb emphasizes the idea that some acts of kindness are never acknowledged or rewarded, just as doing good to a tree (like watering or caring for it) may go unnoticed. In other words, it urges people to continue doing good without expecting anything in return. It’s a call to pure altruism and performing good deeds simply out of the goodness of one’s heart. Similar to the English equivalent: ‘Do good without expecting anything in return.’