Plant Profile: Salvia uliginosa

Sky-blue sage, a species of Salvia often categorized as a semi-hardy annual, is characterized by its open, upright, and spreading growth habit. Its striking visual appeal comes from the continuous bloom of small, vibrant sky-blue flowers that emerge on tall spikes. These flowers typically open in the morning and wither by late afternoon during hot weather, but are quickly replaced by fresh blooms the following day.

This salvia variety flourishes in moist to boggy conditions—hence its common name, Bog Sage—and can tolerate poorly drained soils. However, it also adapts well to standard garden soil. For optimal growth, it is advisable to plant it at the back of a border, where it may require staking or can be combined with other plants for support. In particularly wet environments, it has the potential to become invasive, as it spreads underground through rhizomes.

For further details on Salvia, please refer to additional resources.