List of botanical gardens and arboretums in the United States

This list is intended to include all significant botanical gardens and arboretums in the United States.

[3][4][5] The total number of botanical gardens recorded in the United States depends on the criteria used, and is in the range from 296[6] to 1014.

[3] The approximate number of living plant accessions recorded in these botanical gardens — 600,000.

[6] The approximate number of taxa in these collections — 90,000 taxa or approximately 40,000 species.

[6] Estimated percentage of collections in existence before Convention on Biological Diversity — 70%[6]