The local pizzeria is in a tight spot: They need 100 tomatoes for their pizza delivered for an upcoming party, but all the tomatoes were stolen overnight!
And the old lady who can barely walk to the market could not buy any carrots for feeding her rabbits! Poor rabbits ..
Plant enough crops to help them out and maybe they will reward you for your kindness! There are more people with quests waiting for you and your increasing range of plants.

Or you could focus more on the management of your farming business: The space on your farm, the crops yield and its growth status, growth time, watering... and you should also keep in mind that not every plant behaves well with its neighbors. There is a lot you can do to make a big profit!

Learn skills and expand your knowledge about crop farming for even more improvements of your business. Master the art of cultivation and you can call yourself an ultimate farmer soon or later!

But keep in mind: Not everything is always in harmony...