NC Cooperative Extension   Service

Master Gardener Decision Support Guide

Perennials

Iris


Shortcuts for Iris Answers

The following problems are listed for this plant and were considered when developing the diagnostic key. If the caller provides accurate answers to the questions, the ones that are linked should key out to that specific problem. The unlinked problems are expected to key to the point where the caller is asked to submit a sample. These samples will often require diagnostic procedures such as soil testing, pathogen culture, Elisa or other test beyond the resources of the average Master Gardener Volunteer or County Extension Agent.

Insects:
(Aphids)
(Thrips)
Macronoctua onusta (Iris borer)
Anatis labicalata (Fifteenspotted Lady Beetle)
(Slug)
Ditylenchus dipsaci (Blue/Stem Nematode)
(Verbena Bud Moth)
(Iris Weevel)

Diseases:
Sclerotium rolfsii (Crown Rot)
Erwinia carotovora (Bacteria Soft Rot)
Cladosporium iridis, Heterosporium sp. or Didymellina macrospora (Leaf Spot)
Puccinia sp. (Rust)
(Mosaic)
(Scorch)
Root, bulb or stem rots refer to Crown Rot.
Pencillium (Blue Mold)
Botrytis cinerea (Blossom Blight)

Other:
Pitimys pinetorum (Pine Vole)

Return to Iris, Perennials, Master Gardener Decision Support Guide


Designed by Cyndi Lauderdale on February 18, 2000.
Contents modified on March 8, 2000.