The Growing Beyond Earth Project has yielded interesting scientific results including several new candidate plants for growing aboard spacecraft. These include varieties of pak choi, cress, and kale that produced greater amounts of biomass than the varieties previously tested in NASA labs. Some of the best varieties from the 2015-2017 classroom studies are now in experimental trials at Kennedy Space Center. Student data also identified some unusual edible plants as possible candidates, including a tough and fast-growing succulent called ice plant (Mesembryanthemum crystallinum), and a Chrysanthemum relative called shungiku (Glebionis coronaria). From the data, we are able to identify plants that can grow under the widest range of classroom environmental conditions, suggesting that those plants may be the most stress tolerant. The GBE Challenge also provided an opportunity to test a new leaf vegetable harvesting strategy in classrooms. The strategy, called continuous harvest, was shown to be successful during the 2015-2016 school year and was subsequently implemented on ISS.