Small yellow wildflowers, brightening the green grasses and rushes around the pond now, are River Loosestrife Lysimachia hybrida, or Lowland Yellow Loosestrife. This plant bloomed last year, and came back stronger with more stems this season. Lysmachias produce floral oil rather than nectar. These plants are also pollen hosts for Macropis bees; the bees specialize in using a mixture of pollen and floral oil to produce offspring. read more at U of MN Extension
