Horticulture/Pests and Diseases of Iris

Pests
../Aphids/ ../Scales/ ../Whiteflies/ ../Mealybugs/ ../Bugs/ ../Thrips/ ../Maggots/ ../Beetles/ ../Weevils/ ../Caterpillars/ ../Mites/ ../Slugs and Snails/
 * Melon Aphid: ../Aphis gossypii/
 * True Bulb Aphid: ../Dysaphis tulipae/
 * Potato Aphid: ../Macrosiphum euphorbiae/
 * Crescent-marked Lily Aphid: ../Neomyzus circumflexus/
 * Peach Aphid: ../Myzus persicae/
 * Florida Red Scale: ../Chrysomphalus aonidum/
 * Iris Whitefly: ../Aleyrodes spiraeoides/
 * Ground Mealybug: ../Rhizocecus falcifer/
 * Plant Bug: ../Lopidea confluenta/
 * Tobacco Thrips: ../Frankliniella fusca/
 * Iris Thrips: ../Iridothrips iridis/
 * Gladiolus Thrips: ../Thrips simplex/
 * Onion Thrips: ../Thrips tabaci/
 * Rose Thrips: ../Thrips major/
 * Lesser Bulb Fly: ../Enumerus tuberculatus/
 * Narcissus Bulb Fly: ../Merodon equestris/
 * Japanese Beetle: ../Popillia japonica/
 * Iris Weevil: ../Monomychus vulpeculus/
 * Zebra Caterpillar: ../Ceramica picta/
 * Verbena Bud Moth: ../Endothenia hebesana/
 * Iris Borer: ../Macronoctua onusta/
 * Stalk Borer: ../Papaipema nebris/
 * Bulb Mite: ../Rhizoglyphus echinopus/

../Voles/

Diseases
Bacterial ../Leaf Spots/ ../Soft Rots/ ../Leaf Spots/ ../Blights/ ../Rots/ ../Rusts/ ../Mosaic/ ../Ringspot/ ../Nematodes/
 * Xanthomonas tardicrescens
 * ../Erwinnia carotovora/
 * Alternaria iridicola
 * Ascochyta iridis
 * Didymellina macrospora
 * Mycosphaerella
 * Phyllosticta iridis
 * ../Botrytis cinerarea/
 * Glomerella cingulata
 * Botryotinia convoluta
 * ../Fusarium oxysporum/ f. sp. gladioli
 * ../Pellicularia rolfsii/
 * ../Sclerotinia sclerotiorum/
 * Mystrosporium adustum
 * Penicillium
 * Puccinia iridis
 * Puccinia sessilis
 * Iris Mosaic Virus
 * ../Tobacco Ringspot Virus/
 * ../Ditylenchus dipsaci/
 * ../Meliodgyne incognita/
 * ../Pratylenchus pratensis/

Other Problems
Hollow centers -- Rhizomatous Irises dies out in the center if not divided every few years.