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PlantGraph

An attributed data graph of the world’s apple cultivars.

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Era Spiral

Every cultivar plotted on a chronological wheel. Inner rings are the oldest heritage apples; outer rings are modern releases. Lineage edges sweep outward through time — ancestors live closer to the center, descendants closer to the edge. Hover any cultivar to trace its line back in time and forward to its modern descendants.

ErasHover a cultivar to trace its lineage · click to pin
Heritage (pre-1900)American Club (1900–1990)Modern Trade (1990+)

Design notes

Polar layout, year-driven radius, deterministic-hash angle. Inner rings = oldest; outer rings = newest. Edge curves sweep toward the center so direction is encoded in the geometry. Pure SVG, no extra deps. Inspired by SpiralJS and the Spiral Plot chronological technique; coloring follows the production graph’s era palette.