We can all play a role in protecting Florida's natural resources.

Iris tectorum Japanese Roof Iris, Wall Iris

Edward F. Gilman, David Marshall, Ryan W. Klein, and Gail Hansen

Release Date: 2/11/2024

DOI: 10.32473/edis-fp287-1999

Agriculture

Abstract

This document provides an overview of the Japanese roof iris (Iris tectorum), detailing its characteristics, growth habits, and uses. The plant features light-green, coarse-textured foliage and blue flowers that bloom in the spring. It thrives in USDA hardiness zones 6 through 10 and can be planted year-round in zones 7 to 10. The Japanese roof iris is suitable for use as a border, ground cover, or mass planting, and it is known for its high drought tolerance and moderate growth rate. The document also highlights the plant’s preference for well-drained, partially shaded locations and its minimal pest issues. Original publication date October 1999.

About this Publication

This document is FPS-287, one of a series of the Department of Environmental Horticulture, UF/IFAS Extension. Original publication date October 1999. Revised October 2023. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication.

About the Authors

Edward F. Gilman, professor emeritus; David Marshall, agricultural Extension agent and program leader, UF/IFAS Extension Leon County; Ryan W. Klein, assistant professor, arboriculture; and Gail Hansen, professor, sustainable landscape design; Department of Environmental Horticulture, UF/IFAS Extension, Gainesville, FL 32611.