The success of a neighborhood seed exchange ① depends on more than the number of packets distributed. Seeds collected in one garden may perform differently in another, even when both gardens appear similar. The organizers ask participants ② to record planting dates and soil conditions. These notes, which accompany each returned packet, ③ helps later growers interpret an unexpected result. A poor harvest does not necessarily show that the seeds were defective; it may reflect a mismatch between the plant and its new setting. By keeping records, growers can compare gardens without ④ assuming that every difference comes from the seeds themselves. The exchange thus circulates experience as well as material. What looks like a small packet ⑤ carries a history of decisions, conditions, and observations. Its practical value increases when that history remains attached, because the next grower can adapt a previous success instead of copying it without regard to context.