LEAF SPOTS. Black Spot of Rose, Delphinium, Cherry Leaf Spot, Iris,
Mountain-laurel, Virginia Creeper.
MAGGOTS. Apple, Cabbage, Carrot Rust Fly, Onion, Seed-corn.
MAMMALS. Cats, Dogs, Gophers, Deer, Mice, Moles, Rabbits, Squirrels,
MEALYBUGS. Azalea, Citrophilus, Citrus, Comstock, Grape, Ground, Long-
tailed, Mexican, Taxus.
MEALY FLATA (Fulgorids)
MIDGES. Chrysanthemum Gall, Rose.
MITES. Boxwood, Bulb, Broad, Citrus, Cyclamen, European Red, Pacific,
Pear Leaf Blister, Privet, Southern Red, Spruce, Two-Spotted
(Common Red Spider).
MOTHS. Abutilon, Brown-tail, Codling, European Pine Shoot, Grape
Berry, Gypsy, Oriental Fruit, Sphinx, Tussock.
NEMATODES. Chrysanthemum Leaf, Meadow, Root-knot, Stem and Bulb.
POWDERY MILDEWS. Crapemyrtle, Euonymus, Lilac, Live-oak, Phlox, Rose.
PSYLLIDS. Boxwood, Pear.
ROTS. Basal, of Narcissus, Brown, Crown, Heart, Root (Armillaria and
Texas), Soft, Stem, Strawberry Red Stele, Turf (Brown Patch,
Dollar Spot, Snowmold).
RUSTS. Asparagus, Bean, Blackberry, Cedar-apple, Hawthorn, Hollyhock,
Quince, Rose, Snapdragon, White Pine Blister.
SAWFLIES. Elm, European Spruce, Larch, Pine, Currant Worm, Pear-slug,
SCAB. Apple, Pecan, Pyracantha, Violet.
SCALE INSECTS. Black, California, Red, Cottony-cushion, Cottony Maple,
Elm Scurfy, European Elm, Euonymus, Fern, Florida Red, Golden
Oak, Hemispherical, Juniper, Magnolia, Oleander, Oystershell, Pine Needle, Peony, Purple, Rose, San Jose, Soft, Tea, Tuliptree.
SLUGS and SNAILS
SMUTS. Corn, Onion.
THRIPS. Flower, Gladiolus, Greenhouse, Onion, Privet.
TREEHOPPERS. Buffalo, Two-marked.
VIRUS DISEASES. Aster Yellows, Chrysanthemum Stunt, Cucumber Mosaic, Curly Top, Elm Phloem Necrosis, Peach X-Disease, Spotted
Wilt, Tomato Mosaic.
WASPS. Digger, Giant Hornet.
WEATHER. Sunburn, Scorch, Blossom-end Rot.
WEBWORMS. Fall, Juniper, Pine, Sod.
WEEDKILLERS. 2,4-D Injury.
WEEVILS. Black Vine, Strawberry Root, White-pine.
WHITEFLIES. Citrus, Greenhouse, Mulberry.
WILTS. Bacterial, of Cucurbits, Aster, Cabbage Yellows, Dutch Elm Disease, Mimosa, Oak, Tomato, Verticillium.
Diseases designated anthracnose are characterized by distinctive dead
areas on leaves, often along the veins, on stems or fruit. Small, slimy,
pinkish spore pustules are formed in wet weather. The slime spores are
spread by wind-blown rain, or by man handling wet plants, but they
are not blown about in dry weather. Hence anthracnose diseases are
most serious in unusually rainy seasons.
(Colletotrichum lindemuthianum), sometimes incorrectly called rust, the major bean disease in eastern and central
states. Dark areas form along veins on underside of leaves and on petioles,
reddish brown spots on stems of seedlings. Chief symptoms are on pods:
round, dark, sunken spots with reddish brown borders, pink spore masses
in center in wet weather. If pods are infected when young, the disease
extends through to the seed, producing a spot first yellow, then rusty
brown or black.
Control. Use western-grown seed and choose relatively resistant varieties; do not save home-grown seed. Do not pick or cultivate beans when
plants are wet; clean up or turn under all old tops.