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Spiraea tomentosa (Hardhack) is a species of shrub in the family Rosaceae. It has a self-supporting growth form. It is native to Canada, the contiguous United States, and North America. Hardhack has simple, broad leaves and purple flowers. Flowers are visited by Tricolored Bumble Bee. Hardhack is a photoautotroph.

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EOL has data for 76 attributes, including:

Known occurrences, collected specimens and observations of Hardhack. View this species on GBIF