;.--·- uI PEST CONTROL FOR HOME VEGETABLE GARDENS Common pests, Some registered Vegetable description, damage pesticides* Last use of pesticide before harvest How to apply, other remarks** General Pests Aphids. Small green, black, pink, or diazinon (Spectracide) Depends on vegetable; see product Apply to both tops and undersides of gray plant lice suck plant juices, malathion label. leaves. weaken plants. Sticky secretions lead endosulfan (Thiodan) ~ to sooty mold. j \ rtyl n"'ID Cutworms. Large caterpillars. Feed on carbaryl (Sevin) Depends on vegetable; see product Apply when cutworms are small. all parts of plants. label. Cutworms are nearly impossible to control when larger. Earwigs. Dark brown with pincers at carbaryl (Sevin) Depends on vegetable; see product Apply to soil surface as dust when rear end. Feed on many plant parts. chlordane*** label. earwigs are first seen. Grasshoppers. Large jumping insects. malathion Depends on vegetable; see product Not normally an important pest. Feed on leaves and blossoms. carbaryl (Sevin) label. I Mites. Tiny, spider-like mites on dicofol ( Kelthane) -mites Depends on vegetable; see product Good coverage needed, particularly on undersides of leaves. Suck plant juices, may be resistant to this label. undersides of leaves. cause leaves to yellow and die. Mites pesticide in some parts can seldom be seen with naked eye. of the state Slugs. Small to large, legless metaldehyde Depends on vegetable; see product Apply as bait to soil. Do not apply creatures. Feed on many plant parts, label. directly to plants. Stale beer in cans causing ragged holes. Leave slime trails. sunk to ground level can control slugs. The beer acts as a bait to which slugs are attracted and drown. Symphylan. Small, white, centipede­ diazinon (Spectracide) Depends on vegetable; see product Preplant application only. Not like animals in soil. Consume roots and label. normally important pest. can ultimately kill plants-particularly young plants. Wireworms. Brown, jointed larvae of diazinon (Spectracide) Depends on vegetable; see product Use as a preplant application only. ·~sxxrtOOO:to> click beetles. Chew holes in edible label. roots. Asparagus Asparagus beetle. Blue-black, yellow­ carbaryl (Sevin) 1 day Apply to all above-ground parts of mottled beetle. Adults feed on spears malathion 1 day plant. Repeat in about a week if and damage them by egg laying. Adults rotenone 1 day needed. and gray larvae eat fronds. Beans Spider mite. Small red to green mites dicofol ( Kelthane) 7 days Good coverage needed, particularly on on undersides of plant leaves; often diazinon (Spectracide) 7 days undersides of leaves. Repeat appli­ accompanied by webbing. Suck plant cations may be necessary. juices, cause leaves to yellow and die. Too small to see with naked eye. Beets and Chard Beet leafminer. White maggots feed No pesticide registered. Remove and destroy infested leaves. under surface of leaf, kill large areas of tissue. Flea beetle. Small brown to dark blue, carbaryl (Sevin) 3 days ( 14 days if tops used as food) Apply to leaves when beetles first jumping beetles cause "shot hole" methoxychlor (beets 14 days appear. Repeat in about a week if ~ '"""" leaves. Can be serious on seedl ings. only) necessary . Carrots Carrot rust fly. Small, legless, whitish diazinon (Spectracide) 10 days Apply to soil at planting time maggots. Burrow into crown and roots. according to label instructions. Cole Crops Cabbage maggot. White maggots feed diazinon (Spectracide) 5 days (broccoli and cauliflower) Apply to soil according to label (broccoli, cabbage, on roots, underground stems; weaken, 7 days (cabbage) instructions. cauliflower) topple, kill plants. Adult is small gray fly. Lays eggs at plant bases. tf;t{.· r~~ Cabbage worm. Soft, velvety green carbaryl (Sevin) 3 days Apply to above-ground plant parts CA!BAG E ROOT MAGGOT caterpillar with faint stripes. Adults endosulfan (Thiodan) 7 days (broccoli and cabbage); 14 days when worms first appear. Repeat are white butterfly with black spots. (cauliflower) applications maybe necessary. rotenone 1 day B. thuringiensis (Dipel) Odays Cabbage looper. Pale green larvae with As above white lines on back and sides. Move in looping manner. Moths are gray-brown with silvery spot. Diamondback moth. Small, light As above yellow-green la rvae with black hairs. Eat holes in leaves. Adults are gray or brown with white wingmarks which form a diamond when wings are folded. Corn Corn earworm. Large ·green, brownish, carbaryl (Sevin) 0 days Apply to silks when silk first appears. or reddish worms. Feed on silk and malathion 5days Repeat 3-4 times at 3-day intervals. kernels of the ear. Lettuce Cabbage looper. Pale green larvae with endosulfan (Thiodan)­ 14 days Apply to leaves when worms first white lines on back and sides. Move in use on head lettuce appear. Repeat if necessary. looping manner. Mot hs are gray-brown only with silvery spot . rotenone 1 day B. t huringiensis {Dipel) 0 days Onions Onion maggot. Larvae are legless, blunt diazinon (Spect racide) 10 days Apply to soil according to label white maggot s w hich kill seedlings and instructions at planting time. damage bulbs of older plants. Adults are flies, pale to dark gray in color, less than 1/4 inch in size. Onion thrips. Adults are small, pale diazinon (Spectracide) 10 days A pply to leaves when thrips first yellow to light brown, w ith f eathery malathion 3 days appea r. wings. Young are pale yellowish green and w it hout wings. Feed on leaves, causi ng silvery areas and wilting. Peas ' 0"'""""" Pea leaf weevil. Grayish brown weevi l methoxych lor 7 days Apply at first signs of notching on the about 1/6 inch long. Feeds on foliage, leaves . No need to treat after 6-leaf severely scalloping edges of leaves. stage. Greatest injury occurs during seedling stage. Pea weevil. Black to brownish weevil malat h1on 3 days Apply soon after first blooms appear with white zig-zag bands across back. methoxychlor 7 days and before pods start to form. Eggs la id on pods. Larvae burrow into rotenone 1 day Addit ional applications may be needed pods and feed on developing peas. Not to control migrating weevils. a problem in western Washington. Pea moth. Small whitish caterpillar No pesticide registered. Rarely a problem. - '"""" that feeds within seeds. Peppers and Flea beetle. Small, oval, shining bronze endosulfan (Thiodan)­ 4days Apply to leaves when beetles or Eggplant or dark blue, jumping beetle. Chews use on peppers only damage first appear. small circular holes in leaves. methoxychlor 7 days Potatoes Potato flea beetle. Small oval, shining rotenone 1 day Apply to leaves when beetles or bronze, jumping beetle. Chews small carbaryl (Sevin) Oday damage first appear. irregular holes in leaves. Larvae of endosulfan (Thiodan) 0 day some species damage tubers . ~/ Colorado potato beetle. Yellow and As above black striped beetle. Larvae are reddish orange, with t wo rows of black spots on each side. Feed on leaves. COLORA DO • POTATO BEETLE Spider mite. Tiny, spider-like mites malathion- may not be Oday Thorough coverage, especially to feed on undersides of foliage. Cause wholly effective undersides of leaves is essential. yellowing and browning of leaves . Mites cannot be seen without a hand lens. Radish Cabbage maggot. White legless larvae diazinon (Spectracide) 10 days Apply to soil according to label at feed in root. planting time. Flea beetle. Small, brown to dark blue, carbaryl (Sevin) 3 days Apply to leaves at first sign of damage. jumping beetles cause "shot holes" B. thuringiensis (Dipel) 0 days in leaves. Can be serious on seedlings. Spinach Cabbage looper. Slender dark o live carbaryl (Sevin) 1 day Apply when worms first appear. green worms with white stripes. Move in looping manner. Squash, including Striped cucumber beetle. Small, diazinon (Spectracide)- 7 days (cucumbers); 3 days (melons) Apply to leaves at first sign of damage. Melons and slender, greenish-yellow beetles with 3 do not use on squash Cucumber black stripes on back. Larvae feed on malathion 1 day roots and underground stem. Adults carbaryl (Sevin) 0 day chew on above-ground portions of endosulfan (Thiodan) Oday CUCUMBERBEETLE plants . ,• Western spotted cucumber beetle. As above Yellowish-green , black-spot ted beetle, i common west of Cascades. Damage usually limited to young plants. SQUASH BU\- Squash bug. Large, grayish sucking carbaryl (Sevin) Oday Apply to vines and foliage when bugs insects. Adults and nymphs kill leaves endosulfan (Thiodan) Oday first noticed. and vines. Attacks squash only. Tomato Colorado potato beetle. Yellow and carbaryl (Sevin)-not Oday Apply to leaves as needed. black striped beetle. Larvae are reddish registered for control of orange with two rows of black spots Colorado potato beetle on each side. Feed on leaves . on tomatoes or for control of hornworm endosulfan (Thiodan)­ 1 day not for fruitworm B. thuringiensis ( Dipel)­ Odays not for flea beetles or potato beetles Tomato fruitworm. Large, green, As above brownish, or reddish worms feed in fruit. Flea beetle. Small, oval, shining bronze As above or dark blue, jumping beetle. Chews small irregular holes in leaves. Hornworm. Caterpillar 4 to 5 inches As above long. Pale green with a short curved red horn on rear end. Turnips and Cabbage maggot. White legless larvae No pesticide registered Rutabagas feed in root. for home ga rden use . *These pesticides are registered with the Environmental Protection Agency for control of the pests listed. However, they may not be registered for all the plants on which the pest occurs. Also, there may be several different brands of pesticide on the market, one of which may not be registered for the speci fic pest, the specific host, or both. BE CERTAIN THAT THE PEST AND THE CRO P ARE LISTED ON THE LABEL before you select a material to use and follow all use directions on the label.