In the version of this Article originally published, the rate of change plotted in Figure 2 was incorrect because of a coding error. The corrected figure is shown below. In the original Figure 2 legend, the onset of flowering slope was given as '0.99, 95% CI: 0.90-1.08', the cessation of flowering slope was given as '1.02, 95% CI: 0.91-1.13', and the r2adjusted for each model was given as greater than 74%'. The correct values are '1.04, 95% CI: 0.97-1.12', '1.25, 95% CI: 0.87-1.62', and '60%', respectively. The main text and the conclusion that the slopes of these relationships are statistically indistinguishable from 1.00 are unchanged. These errors have now been corrected in the PDF and HTML versions of the article. The authors are grateful to A. Iler, who drew attention to this issue.