Buddy gets five colorful bags in the mail from his grandfather, who writes:

Dear Buddy,
Have, five days of fun!
Love, Gramps
P.S. It's almost spring!

Buddy finds a surprise in each bag, and with each surprise he discovers something wonderful about seeds. In one bag, for example, there are different kinds of seeds which Buddy pastes onto colored paper and which are reproduced photographically in the book for accurate identification. In another bag, there are cards that show how seeds grow. As Buddy sorts, collects, eats, and creates with seeds, he learns plenty about growth and germination, making this introduction both entertaining and educational.