Easily grown in average, medium to wet soils in full sun to part shade. Plants perform well in both boggy conditions (including shallow standing water to 3 – 4” deep) and consistently moist garden soils. Never allow soils to dry out. Scorched leaf tips and withering leaves are often the first signs of drying soils. In water gardens, plants are typically planted in containers with water covering the crowns or in wet soils at the water’s edge. Plants appreciate some relief from hot summer sun (e.g., afternoon shade or filtered sun) when grown in hot summer climates such as the St. Louis area. Plants will slowly naturalize by spreading rhizomes, but are not considered to be invasive. If grown in containers sunk below the water surface, plants will not spread.
Mass as a ground cover in small areas of water gardens, along streams or ponds, bogs or in moist open woodland gardens. Helps control erosion on water banks. Also effective in rock gardens, border fronts, foundations or as small landscape accents as long as the soil moisture requirements can be met. This plant may be used in the landscape in somewhat the same situations as one might use those species of Carex that prefer sun, part shade.
For a neat appearance, remove old foliage before new leaves emerge. Divide clumps every 2 to 3 years in early spring. Plant divisions in pots until well-rooted, then transplant to a permanent location. Requires moist, acidic soil. An excellent choice for the rain garden, stream or pond margins, bogs or moist woodland gardens.