Hypericum boreale
northern St. John's-wort (Hypericum mutilum ssp. boreale)
Northern St. John's-wort is a beautiful and ecologically valuable wetland species. It's dark red to magenta foliage and its small size make this plant a stand-out in the right garden space. As a wetland species, it requires consistently wet conditions and often grows in submerged areas.
Height: 10-24 in
Spread: 4-8 in
Hardiness Zone: 5-9
Bloom Color: Yellow
North American Distribution

Scott Loarie, iNaturalist, https://www.inaturalist.org/observations/3689435

Reuven Martin, iNaturalist, https://www.inaturalist.org/observations/240618641