Flowering in the tillers with leaf samples collected
Control tagged plants at 1070 m did not flower in 2017 and 2018, but did in 2019, a masting year. Since activation of floral development initiates a year before anthesis (Appendix S1), leaf samples from these control plants (18Control; January 2018) were included in the study. Some tillers collected from the plants that had been moved to other altitudes (16Hot, 16Cool, and 17Hot) flowered in the next season i.e. in 2017, 2017 and 2018, respectively. Flowering was recorded for each of the tagged tillers and all the leaf samples were then correspondingly identified as being from tillers that subsequently flowered or not (Table 1).