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Root potency varied seasonally, creating complex harvest schedule that maximized medicinal properties while ensuring sustainable supply. Generally, autumn harvest captured roots at peak potency—plants had withdrawn energy underground in preparation for winter dormancy, concentrating active compounds in root storage organs. Spring harvest before new growth began also yielded potent roots, though timing was more critical—once plant initiated above-ground growth, root compounds were mobilized upward, reducing underground concentrations.
Summer harvest was typically avoided—roots were actively supporting plant growth, compound concentrations were diluted, medicinal properties were diminished. Winter harvest was difficult due to frozen ground but sometimes necessary for emergencies, the frozen roots requiring special processing to extract medicinal compounds from tissues that had been damaged by ice crystal formation.
The harvester maintained mental calendar of which roots peaked when, scheduling gathering expeditions to coincide with optimal timing for needed species. This required planning ahead—recognizing that autumn-harvested roots must last through winter and spring until next harvest season, that spring-harvested roots must sustain through summer until autumn gathering became possible. The harvest schedule was strategic planning exercise ensuring adequate supply while respecting seasonal variation in root quality.
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