Grow in wet soils or in shallow water in full sun. The Thalia bog plant strives in organically rich loams. Plants are considered winter hardy to USDA Zones 6-10. In St. Louis, plants are best grown in containers either sunk in wet mud near the water line or submerged in up to 2’ of water. Plants may also be grown in wet boggy areas. Containers covered by 18-24” of water will generally overwinter in place. Consider bringing other containers indoors to a greenhouse or other frost-free area with bright light. If these plants are grown in wet boggy soils, cut back tops and mulch heavily in winter.
Minimum quantity for “Thalia or Thalia dealbata Bog Plant” is 6.