Thalia Dealbata Water Canna

This plant thrives in shallow water or boggy soil. Ideally, place the rhizome in water no deeper than 6 to 12 inches, or keep the soil consistently saturated if planting in a bog garden.

Thalia Dealbata is a hardy perennial suitable for USDA zones 6 through 10. In colder regions within this range, ensure the rhizome is deep enough to avoid freezing solid, or move the container to a protected area.

These plants can grow quite large, reaching a mature height of 6 to 10 feet and a spread of 3 to 6 feet. Be sure to provide ample space in your pond layout to accommodate its significant vertical and horizontal growth.

This plant requires high light conditions to thrive and bloom effectively. Position it in a location that receives full, direct sun throughout the day for the best foliage color and flower production.

To plant, secure the rhizome in an aquatic planting basket using heavy pond soil or aquatic substrate. Ensure the crown is positioned near the surface of the soil and submerge the basket at the recommended shallow depth.

No CO2 is required for this marginal plant. While it is generally self-sufficient in a pond environment, you can use aquatic plant fertilizer tablets during the growing season if you notice stunted growth or pale foliage.