Environmental change is expected to accelerate, and responses to environmental variation are becoming more relevant. The study of adaptation to variable environments has been central in the study of Biology at least since Darwin's time, but most recent studies in eco-evolutionary dynamics do not focus on traits that are thought to evolve as a response to environmental variation. Specifically, studies of evo-to-eco pathways centred on traits that may be adaptive through the expression of variation are lacking. An appropriate system for such a study is the greater duckweed, Spirodela polyrhiza, which is a clonal floating plant that produces overwintering structures called turions. Despite their clonality, turions reactivate at wildly different times, ranging from the early onset of Spring to the end of Fall, and some do not reactivate for a few years. By spreading the risk of early/late freeze-overs across newly formed fronds, S. polyrhiza ensures the survival of their offspring in the event of an unpredictable, rare, and catastrophic event. As such, turion reactivation asynchrony is hypothesized to be a bet-hedging strategy. However, it also provides S. polyrhiza additional benefits that may be under selection. Here, I test the null hypothesis that the inherent advantages of turion reactivation asynchrony are sufficient to explain its evolution in north temperate ecosystems without recourse to bethedging strategies. To test this, I conducted a common garden experiment using S. polyrhiza and two other duckweed species under varying levels of reactivation asynchrony, measuring final population sizes and overall growth rates in the context of naturally variable conditions. Additional analyses were run to further examine the inherent costs and advantages of asynchrony. There was evidence of an additional cost I would first like to thank my supervisor, Dr. Andrew Simons, for guiding me throughout my degree. I've learned a lot about eco-evolutionary dynamics, academia, scientific writing, and how fascinating duckweed can be. Big thanks to my committee members, Dr. Catherine Cullingham and Dr. Julien Martin for their valuable input and suggestions for my work. It has been a pleasure to have you on the team for my masters! Many thanks also to Dr. Roslyn Dakin who served as an external examiner on my defense committee; thank you so much for being a part of it! Special thanks to former graduate student Riley Morris, much of my work was based on your studies of Spirodela polyrhiza as well as the groundwork you prepared for the mesocosm experiment. Another special mention: Dr. Martha Mullally, who served as chair for my defense and was also the first professor I had the opportunity to TA for during the early stages of my Masters. Working with Dr. Mullally has helped me see biology in a more enthusiastic way, and I cannot thank her enough for it! I'd also like to thank the current members of Andrew's lab, Matthew, Winston, Harry, Paul, and Melissa as well as Dr. Rozlyn Dakin and her crew, Ilias, Caitlin, Courtney,and Ru. Being...