Ah, physical dormancy is a hard seed coat—like in tamarind or acacia—and physiological is inside, a chemical hesitation. Scarification, by sandpaper or hot water, scratches that coat so water wakes the seed. But listen, in the nursery, we find many seeds tagged 'physical' actually need a monsoon cycle's patience more than force—we lost a batch of gulmohar scarifying too eagerly. My real teacher is watching which monsoon shower finally coaxes the seedlings up.
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