Host-count data. The “insect species hosted” figure on each plant card combines two research datasets, scoped to North Carolina / the eastern United States: native butterfly & moth (caterpillar) host counts from the National Wildlife Federation Native Plant Finder (Douglas Tallamy & Kimberly Shropshire’s research; for keystone genera such as asters, goldenrods and sunflowers we use NWF’s regional Keystone Plants: Eastern Temperate Forests figure), plus pollen-specialist (oligolectic) native bees from Fowler & Droege, Pollen Specialist Bees of the Eastern United States. These figures are genus-level, so plants in the same genus share a count. A handful of specialty species have no documented figure in either dataset and carry no host tag, which reflects gaps in the data, not the absence of wildlife value.