This Farming Fast Plants activity introduces a classroom investigation that is easily adaptable for all grade levels and designed to engage teachers and students as investigators. The activity has the practical outcome of producing an abundant supply of Fast Plants seed for future classroom use and for sharing with other teachers. The central question of the activity is "How many seeds can your students produce from each seed planted?" This activity draws upon many life science principles as they relate to crop production, farming practices and sustainable agriculture. From the perspective of the teacher and students as "farmers of the Fast Plants crop in the classroom," the activity is rich in investigative learning which leads to an understanding of the role of the environment and its impact on populations of the student-friendly organisms, Fast Plants.