Multiple studies demonstrate that seeds regulate their germination timing by sensing and responding to environmental moisture and temperature cues.
The retrieved papers consistently demonstrate that seed germination and dormancy release are heavily regulated by environmental cues such as moisture (drought stress, hydration, desiccation) and temperature. Papers [2], [3], [5], and [9] explicitly detail how seeds sense and respond to hydrothermal conditions and temperature-moisture interactions to determine germination timing. Consequently, the claim is supported by the direct evidence.