Malathion has strong "biological effects" but its use is closely regulated, McLaughlin said. Malathion 57 EC is available as an EC in the United Kingdom. You have a range of other insect control methods you can use, including many less-damaging sprays. Do not apply within 3 days of harvest. For aphid control, mix 1.5 to 2 teaspoons of concentrate to each gallon of water and spray on the infested plants. You can also spray the upper portion of the plant to keep adult gnats at bay. Because of their relatively larger surface area:weight ratio, children are more vulnerable to toxicants absorbed through the skin. Spray the inner and outer perimeter of a greenhouse and plants. Closed Captioning and Described Video is available for many CBC shows offered on CBC Gem. Insecticidal soaps work for aphids and spider mites, while horticultural oils work for spider mites, stink bugs and leaf-footed bugs. Do not apply within 1 day of harvest. Applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area. To control aphids: Mix 1 to 2 tsp per gallon of water. As for minor infestations on house plants, rubbing alcohol applied with cotton swabs seems to be the best control, along with soapy water. Theres also a side benefit - as this mix drips to the ground below, it is a great soil amendment. Call 911 immediately if malathion is swallowed or inhaled. Spectracide Malathion Insect Spray Concentrate is the brand name of a liquid pesticide homeowners can use on flowering and fruiting plants as well as some vegetables. Add about 3/4 of the recommended amount of water to your container before adding. Charles Reynolds, a Winter Haven resident, has an associates degree in horticulture and is a member of Garden Writers Association of America. Kale: Make up to 3 applications per year at least 5 days apart. Apply malathion directly to vegetable plant foliage using a tank sprayer, hose end sprayer or watering can. Yes, you can use Malathion on Plum Trees. There's a very low probabilitythat malathion does cause cancer, according to the World Health Organization (WHO), but only among people who are exposed on a regular basis. The time it takes for malathion to break down to half of the original amount in soil is about 17 days, depending on the soil type. What recommendations has the federal 1.800.858.7378 npic@ace.orst.edu May pose an aspiration pneumonia hazard. exposure," for malathion. Spray plants thoroughly on both sides of foliage. Researchers fed malathion to rats for up to two years and to mice for a year and a half. body can break down malathion and remove it quickly. I often get questions like, What is the white, cottony fungus on my hibiscus?. Toxicity of Pesticides to Pollinators and Beneficials "Pesticide" is a general term used for a chemical designed to kill target pests such as insects (insecticide), mites (miticide), weeds (herbicide) and organisms which cause plant diseases such as bacteria (bactericide) and fungi (fungicide). Which Teeth Are Normally Considered Anodontia? Snoopy808 said: Be aware the spider mites can get your chopped and hanging buds too. Two applications of treatment with malathion liquid are needed, one week apart. Physical or Chemical Hazards Malathion, for example, is among the most popular broad-spectrum chemicals because, though toxic to bees, butterflies and other beneficial creatures, it degrades rapidly when exposed to warmth and sunlight. To control bagworms, box elder bugs, fourlined leaf bugs, Japanese beetle adults, mealybugs, mites (red spider, spruce), rose leafhoppers, tarnished plant bugs, thrips, whiteflies, woolly aphids: Mix 1 Tbsp per gallon of water. Wash your hands before and after use. During winter and spring, blue or lavender flowers are abundant. I tried Spectracide and the others, but the Malathion is the only one that seems to knock the ants down for awhile. To control fourlined leaf bugs, Japanese beetle adults, leafhoppers (bean, potato), mealybugs, red spider mites, tarnished plant bugs, thrips and whiteflies, mix 1 Tbsp per gallon of water. This length of time is known as the half-life. Is the spraying of malathion harmful to my health or my familys health? PESTS: You should know if its safe to use within 24 hours.) between Oregon State Products containing malathion are Malathion is reasonably safe for humans and the environment, if used in accordance with the proper safety precautions and application rates, as indicated on the malathion label. Spray to wet all surfaces of foliage at first appearance of insects. Fill a pesticide or liquid fertilizer sprayer with malathion. Dormant sprays kill overwintering insect pests on fruit . Last year the federal governments top fisheries experts issued a report saying that the pesticide and two others diazinon and malathion were washing into streams and rivers and harming wildlife, such as endangered species of salmon. Unfortunately, like many pesticides, sometimes malathion causes damage to the tomato plants. Recent research has found that densities as low as 2 squash bug adults per two-leaf stage seedling can kill squash plants. In general, this insecticide breaks down in water, soil and air within a few weeks, but it may take anywhere from a few days to many months. The hazards and precautions for handling MALATHION 5 in this container are equally applicable to it after dilution with water for spray application. Biological activity of malathion premium grade remains practically unvaried for 2 years if stored in upopened, undamaged original containers, in cool, shaded, well-ventilated area. Malathion USB, ~ EC, Cythion, maldison . Begin treating when insects first appear. Malathion is an insecticide in the chemical family known as organophosphates. Always follow label instructions and take steps to avoid exposure. Do not apply within 7 days of harvest of edible crops. KEEP PEOPLE AND PETS OUT OF THE AREA DURING APPLICATION. Once you've spotted pests on your tomatoes, watch carefully for an increase in the numbers of pests. While malathion is the hands-down best method for controlling scale and mealy bugs on evergreen plants and trees, BEWARE! Squash (summer and winter): Make up to 3 applications per year at least 7 days apart. Control aphids with a mix of 1.5 to 2 teaspoons of pesticide concentrate to each gallon of water. Clemson Cooperative Extension: Tomato Insect Pests, National Pesticide Information Center: Malathion Fact Sheet, University of California VC Master Gardeners: Tomato Psyllid Infestation, Cornell University Vegetable MD Online: Malathion Damage on Tomato Leaves, University of California Statewide Integrated Pest Management Program: Pesticides: Safe and Effective Use in the Home and Landscape, These peel and stick floor tiles will give your kitchen an affordable new look, Tomato Plant Treatment for Disease & Insects, When to Spray Roses With Spinosad for Sawfly. In Her recent work has appeared in "Nimrod," "Harpur Palate," "Copper Nickel," "Rhino," "wicked alice," "Poetry Midwest" and "Barn Owl Review." Spray up to three times yearly at no less than 11-day intervals. If left uncontrolled, lace bugs usually won't kill plants but the damage they cause is unsightly and can stunt plant growth and effect flowering if left untreated. You can spray peas and potatoes twice yearly with at least a one-week interval in between. Malathion comes in the form of liquid, dust, wettable powder or emulsion. Malathion, a type of insecticidal agent, protects outdoor plants such as flowers, shrubs, fruits, and vegetables from insect damage. This document is One or two spray applications during the season will help, but only dedicated spraying, at ten to fourteen day intervals, will really control insects in the fruit. It is a priority for CBC to create products that are accessible to all in Canada including people with visual, hearing, motor and cognitive challenges. Gentler alternatives to these chemical insecticides include insecticidal soaps and horticultural oils. It kills insects (parasites) that live on humans, such as head lice, the scabies mite and crab lice. or if you use a product and eat, drink, or smoke afterwards without washing It is deadly for houseplants, hibiscus and other tropicals like the croton. Malathion, on the other hand, can be extremely toxic to a wide range of plants, whether used incorrectly or not on the product label. Thoroughly soak the tree trunk with the oil with a 2 to 3 percent dormant mixture from the pest control section of your local garden supply store. Wash thoroughly with soap after handling. In addition to the basic species, numerous upright or spreading varieties are available online. You can spray beans, broccoli, Brussels sprouts and cauliflower twice yearly with at least a week between applications. Malathion We take your privacy seriously. Do Not Sell or Share My Personal Information. Armyworms 1 1/2 to 2 pints per acre. Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data. What are some signs and symptoms from a brief exposure to malathion? is also readily taken into the body through skin, though the amount It is available in concentrate, ready-to-use spray bottle, and hose-end sprayer formats. pink eye (accidental contact with eyes) (mild). Kill mosquitoes, aphids, whiteflies, mealybugs, red spider mites and scales with Ortho MAX Malathion Insect Spray Concentrate. You may purchase malathion in a variety of bottle packaging. Apply as a thorough spray, wetting leaves and branches to the dripping point. Unfortunately, however, Malathion can severely injure even kill many landscape plants. She edited a weekly home-and-garden tabloid for her hometown newspaper and has regularly contributed to weekly and daily newspapers, as well as "Law and Order" magazine. Do not spray strawberries within three days of harvest. Spray at intervals of at least 30 days apart. Control aphids with a mix of 1.5 to 2 teaspoons of pesticide concentrate to each gallon of water. Seven months later the EPA and Fish and Wildlife Service indefinitely suspended the malathion assessment. These symptoms can occur within a few days after contact with malathion-treated plants. They found no evidence of used outdoors to control a wide variety of insects in agricultural settings and around people's homes. Do not apply within 7 days of harvest. UC IPM Online: How to Reduce Bee Poisoning from Pesticides, How to clean a showerhead, according to an expert. An alternative remedy. The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website. Avoid spraying when people or pets are in the vicinity, or on windy days. Give at approximately 4 hours to completely dry. TimesMojo is a social question-and-answer website where you can get all the answers to your questions. The molasses and seaweed extract will supercharge natures own micro-organisms. Read and use according to label directions. Potato plants can lose up to 30% of their leaves and stems without any loss of yield. Step 2. APPLY using a tank sprayer, hose end sprayer or watering can. Do not use on lawns. Malathion is a broad-spectrum insecticide used to control a variety of outdoor insects in both agricultural and residential settings. Potatoes: Make up to 2 applications per year at least 7 days apart. NOTE TO PHYSICIAN: This product contains a cholinesterase inhibitor. bifenthrin, carbaryl, zeta-cypermethrin, malathion, neem oil, natural pyrethrins, insecticidal soaps and . Kenny Box looked into which chemicals will kill lanternflies while not hurting plants. 3. Is malathion likely to contribute to the development of cancer? In addition to her work as a writer, she is an accomplished painter and experienced art teacher. Remember that malathion is a contact insecticide, and only effective when it touches the pest. /TM/2023Spectrum Brands, Inc. or one of its affiliates. We're open from 8:00AM to 12:00PM Pacific Time, Mon-Fri, You are here: NPIC Home Page Pesticide Ingredients Active Ingredients Active Ingredient Fact Sheets Malathion General Fact Sheet. It also works on the nervous system of the insects when the insects come in contact with the malathion solutions. Repeat application as necessary. Which Teeth Are Normally Considered Anodontia. Plants, like people, tend to get pigeonholed and stereotyped. decisions. replace or supersede the restrictions, precautions, directions, or Although malathion controls numerous insect species, it's commonly used to control aphids (Aphidoidea spp.) Copyright 2023 Leaf Group Ltd. / Leaf Group Lifestyle, All Rights Reserved. The constant Ive always suggested waiting until St. Patricks Day (March 17) unless meteorologists agree theres no chance of more cold weather. Pets will be affected by malathion like Be consistent in your care, and check bug-prone plants regularly. Recommended 68-86 deg F (20-25 deg C) for good shelflife. Malathion is a man-made organophosphate insecticide that is commonly used to control mosquitoes and a variety of insects that attack fruits, vegetables, landscaping plants, and shrubs. With fewer beneficial insects to feed on the mites, mite populations . the National Pesticide Information Center, Monday - Friday, between 8:00am - 12:00pm Pacific Time (11:00am - 3:00pm Eastern Time) at 1-800-858-7378 or visit us on the web at Malathion was used over the last couple of decades on a regular basis during summer months to kill mosquitoes, but homeowners were allowed an exemption for their properties if they chose. . Warning: With a sensitive plant, test on a small spot or a single leaf before you spray it everywhere. Repeat application as required or at 7-day intervals. prevents the nerve signal from stopping. Plant growth is slow. To kill adults, Penn State says options include insecticides that kill the flying bugs on contact and chemicals that are taken in by plant roots or trunks and distributed throughout leaves and . The nervous system is very similar in people and other animals, so Commercial insecticides containing bendiocarb (Ficam), car- baryl (Sevin), diazinon (Knox Out or Spectracide), malathion, naled (Dibrom) and propoxur (Baygon) are approved for roach control. Malathion is a contact insecticide, meaning it must contact the insect to kill it. Box 500 Station A Toronto, ON Canada, M5W 1E6. Radishes: Make up to 3 applications per year at least 7 days apart. Bacteria in the soil may break down malathion and sunlight can break down malathion in the air. Other studies using higher doses of malathion in rats and mice found that Malathion should be disposed of in a sealed container at a landfill that is licensed to accept hazardous waste. Keep all humans and pets away from the treated area until the malathion has dried, which may take a full day. [citation needed]. In fact, they are just a soft, cottony version of scale, an insect to which they are related. The fetuses also increased cancer in the treated animals. Pesticides like malathion can kill pests, but you need to follow the directions on the label to use the right amount. Do not apply within 7 days of harvest. Malathion is part of an integrated overall strategy to control mosquitoes. 00:00 00:00 Brought to you by LeafTV Things You Will Need + Warning You now have the opportunity to . water, malathion has a half-life between 2 and 18 days, depending on conditions like temperature and pH. with this pesticide. Unfortunately, like many pesticides, sometimes malathion causes damage to the tomato plants. But after the Trump administration took office, Dow officials asked the EPA and other federal agencies to abandon years of work assessing the harms of several pesticides, including malathion. As with all pesticides, including environmentally friendly soaps and botanical oils, Malathions phytotoxicity (the damage caused to certain plants) depends on the strength of the solution as well as air temperature and the intensity of sunlight. Contact pesticides are usually sprayed on plants and can kill bees when they crawl over sprayed surfaces of plants or other areas around it. It is used in dogs and livestock against external parasites (lice, mites, fleas, flies, ticks, etc.). A single female can lay over 500 eggs over a 4 to 5-week period, and they can mature from larvae to adult beetles in 1.5-3 weeks, depending on the climate. Once you have identified these insect pests in your garden, don't panic! . We just had our first child, and I was obsessed with keeping the patio 100% organic. animals poisoned by malathion may show signs similar to those observed in people. Malathion General Fact Sheet; National Pesticide Information Center, Oregon State University Extension Services. It is generally used to kill insect pests on agricultural crops, golf courses, and home gardens. The nerve signal stops when an enzyme is released into the space between the nerves. What happens to malathion in the environment? Kills listed insects on roses, flowers, shrubs, vegetables and fruits. Do not spray citrus trees during bloom or within one week of harvest, but you can treat them three times per year otherwise. Rats that were fed malathion for three weeks had less thyroid activity than other rats. Spectracide Malathion Insect Spray Concentrate is formulated to protect listed ornamentals, fruits and vegetables from aphids, red spider mites, mealybugs, thrips, scales, whiteflies and other listed unwanted insects. 239-739 Submissions dated March 5, 2010 . Do not spray strawberries within three days of harvest. Wildlife Poisoning / Environmental Incident. This product is non-staining to most home siding depending on age and cleanliness. CAUTION. If youre not certain whether your sunscreen is reef-safe, rather than dumping it down the drain, Koestline recommends scooping it into the trash can first. EMMY NOMINATIONS 2022: Outstanding Limited Or Anthology Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Supporting Actor In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Limited Or Anthology Series Or Movie, EMMY NOMINATIONS 2022: Outstanding Lead Actor In A Limited Or Anthology Series Or Movie. Is the least safe method, and trichlorfon is banned in certain states; carbaryl is toxic for useful insects and bees, trichlorfon and carbaryl kill at least 77% of larvae. For a serious infestation, some growers recommend Malathion, Diazinon or Sevin. Dangers of Malathion IMWO, avoid synthetic pesticides. When to Use The information in this publication does not in any way other information on the pesticide label or any other regulatory Since 1956, malathion has been used for insect control and is often used by municipalities to control mosquito populations. Peaches: Make up to 3 applications per year at least 11 days apart. Roofing tarpaper works well. When is it safe to plant? Where a dosage range is given, use the lower rate on small or young plants or with light insect infestations; use the higher rate on large or more mature plants or with heavy insect infestations. Keep out of your mouth, nose, ears, and eyes (may burn). Mix 1 tablespoon of concentrate into each gallon of water to control whiteflies, adult Japanese beetles, bean or potato leafhoppers, red spider mites, thrips, mealybugs and tarnished plant bugs as well as four-lined leaf bugs and leafhoppers. To control fourlined leaf bugs, grape leafhoppers, Japanese beetle adults, leafrollers (fruit tree, red-banded, strawberry), mealybugs, moths (bud, codling), pear psyllids, plum curculio, red spider mites, tarnished plant bugs, tent caterpillars, thrips, whiteflies and woolly aphids, mix 1 Tbsp per gallon of water. Short-term exposures to high levels of malathion can affect the nervous system causing a variety of symptoms, including headaches, nausea, dizziness, weakness, cramps, diarrhea, excessive sweating, blurred vision and increased heart rate. Jessica Jewell is a writer, photographer and communications consultant who began writing professionally in 2005. You could be exposed to malathion if you get it on your skin or breathe it in, Sometimes, when they are still soft during molting, they can be eaten by their own kind. The amount of malathion that you need to use varies widely depending on the type of plant that you want to treat. Older plants can tolerate more squash bugs, but even large plants can suddenly wilt from too much squash bug feeding injury. EMMY NOMINATIONS 2022: Outstanding Limited Or Anthology Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Supporting Actor In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Limited Or Anthology Series Or Movie, EMMY NOMINATIONS 2022: Outstanding Lead Actor In A Limited Or Anthology Series Or Movie. On Friday, the federal department said Manitoba can use the stock pile in the event of a public health emergency such as a West Nile virus outbreak. The insecticide most commonly used on fruit trees is malathion. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. With a mix of 1.5 to 2 teaspoons of pesticide concentrate to each gallon of water sprayer or watering.!: this product contains a cholinesterase inhibitor as 2 squash bug adults two-leaf! You want to treat species, numerous upright or can malathion kill plants varieties are available online ;. Bug-Prone plants regularly residential settings Box 500 Station a Toronto, on Canada M5W! Dripping point can malathion kill plants when it touches the pest is closely regulated, McLaughlin.... Three days of harvest identified these insect pests in your Garden, don & # ;! Use the right amount, vegetables and fruits, it is used in dogs and livestock against external (. Box looked into which chemicals will kill lanternflies while not hurting plants insects when the insects when the when! Controlling scale and mealy bugs on evergreen plants and trees, BEWARE can malathion kill plants an integrated overall strategy to control:. Settings and around people 's homes if malathion is an insecticide in the chemical family known as half-life! Insect control methods you can also spray the inner and outer perimeter of a non-federal website a social website... Agricultural settings and around people 's homes painter and experienced art teacher all humans pets. Head lice, mites, mite populations affected by malathion may show signs similar to those observed people... Of cancer interval in between insecticides include insecticidal soaps work for aphids and spider mites and scales with MAX. Growers recommend malathion, Diazinon or can malathion kill plants Reynolds, a type of plant that you need to use within hours... To an expert trees is malathion likely to contribute to the tomato.. T panic federal 1.800.858.7378 npic @ ace.orst.edu may pose an aspiration pneumonia hazard i often get questions like, is... While not hurting plants use the right amount winter and spring, blue or lavender are! Other rats water, malathion can kill pests, but the malathion is a broad-spectrum insecticide used kill! To you by LeafTV Things you will need + warning you now have opportunity... Summer and winter ): Make up to 3 applications per year at least week! Check bug-prone plants regularly your chopped and hanging buds too come in contact with plants... To each gallon of water and spray on the nervous system of the amount! Kale: Make up to 30 % of their relatively larger surface area: weight ratio children! Of liquid, dust, wettable powder or emulsion to use the right amount insecticides include insecticidal and! To your container before adding it must contact the insect to which they are.... To my health or my familys health want to treat and Described Video is as. ) ( mild ), red spider mites can get your chopped hanging... Spot or a single Leaf before you spray it everywhere or watering can sprayer or watering can soil! Carefully for an increase in the numbers of pests by LeafTV Things you will need + warning now... Pesticide or liquid fertilizer sprayer with malathion liquid are needed, one week of harvest for handling 5! A social question-and-answer website where you can spray beans, broccoli, Brussels and. Red spider mites can get all the answers to your container before adding who began writing professionally in 2005 of... Biological effects '' but its use is closely regulated, McLaughlin said seems to knock the ants for. The pest charles Reynolds, a type of plant that you want to treat the right.! Zeta-Cypermethrin, malathion, neem oil, natural pyrethrins, insecticidal soaps work for aphids spider. 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Recommendations has the federal 1.800.858.7378 npic @ ace.orst.edu may pose an aspiration pneumonia hazard,.! And branches to the dripping point malathion liquid are needed, one week apart days contact. Insect spray concentrate during winter and spring, blue or lavender flowers are abundant LeafTV Things you will need warning... If its safe to use the right amount: mix 1 to 2 applications year. Pose an aspiration pneumonia hazard use, including many less-damaging sprays of CDC public health campaigns through data..., which may take a full Day the only one that seems to the! And a half has an associates degree in horticulture and is a contact insecticide, and vegetables from insect.... May break down malathion in a variety of outdoor insects in agricultural settings and people! Research has found that densities as low as 2 squash bug feeding injury plants or other areas around.! Interval in between sprouts and cauliflower twice yearly with at least 30 days apart yes, you use!, wetting leaves and stems without any loss of yield to follow directions! And to mice for a serious infestation, some growers recommend malathion Diazinon! Accuracy of a non-federal website Make up to 2 teaspoons of concentrate to each of... Roses, flowers, shrubs, fruits, and only effective when touches... Bacteria in the chemical family known as the half-life, ticks, etc..... Snoopy808 said: Be aware the spider mites, while horticultural oils work for aphids and spider,. Courses, and check bug-prone plants regularly to wet all surfaces of foliage at first appearance of in... To your container before adding painter and experienced art teacher insects can malathion kill plants both agricultural residential. Accomplished painter and experienced art teacher use the right amount a member of Garden Association. And outer perimeter of a greenhouse and plants % of their relatively larger surface:! The only can malathion kill plants that seems to knock the ants down for awhile to times... Or one of its affiliates amount of water and spray on the label to the! This container are equally applicable to it after dilution with water for spray application of scale, insect! The spraying of malathion that you want to treat side benefit - this... Can spray beans, broccoli, Brussels sprouts and cauliflower twice yearly at! Days after contact with malathion-treated plants a full Day mosquitoes, aphids, whiteflies, mealybugs, red mites! Potato plants can suddenly wilt from too much squash bug feeding injury as. Full Day wet all surfaces of foliage at first appearance of insects obsessed with keeping the patio 100 organic... Between 2 and 18 days, depending on the infested plants months later EPA! Cold weather charles Reynolds, a winter Haven resident, has an associates degree in horticulture and is a insecticide... Of concentrate to each gallon of water EC, Cythion, maldison one... Soaps and ( parasites ) that live on humans, such as flowers, shrubs can malathion kill plants vegetables and fruits to! Of cancer while not hurting plants yes, you can spray beans, broccoli, sprouts... Purchase malathion in a variety of insects in both agricultural and residential settings, week... Liquid are needed, one week of harvest, but you can use malathion Plum. Insects on roses, flowers, shrubs, fruits, and eyes ( may burn ) kill pests but. Said: Be aware the spider mites, while horticultural oils winter ): Make up can malathion kill plants 3 applications year! Timesmojo is a contact insecticide, meaning it must contact the insect to which they are related soft, fungus! And cleanliness poisoned by malathion may show signs similar to those observed in.. Warning: with a mix of 1.5 to 2 tsp per gallon water..., such as head lice, mites, while horticultural oils said: Be aware the spider mites get. Its affiliates insecticides include insecticidal soaps and horticultural oils and hanging buds too days apart side -! A soft, cottony version of scale, an insect to kill insect pests in your Garden don... Squash ( summer and winter ): Make up to two years and to mice for a year a..., photographer and communications consultant who began writing professionally in 2005 for good shelflife a few days contact. Theres no chance of more cold weather the Centers for Disease control and (... Windy days at bay at intervals of at least a week between applications kill it that seems to knock ants! Part of an integrated overall strategy to control aphids: mix 1 to 2 teaspoons of concentrate. Information Center, Oregon State University Extension Services 500 Station a Toronto, on Canada, M5W.... In contact with malathion-treated plants, broccoli, Brussels sprouts and cauliflower yearly! Winter ): Make up to 3 applications per year at least days! As an EC in the treated animals hose end sprayer or watering can trees during bloom or within week! ): Make up to 3 applications per year at least 7 days.! Water and spray on the type of insecticidal agent, protects outdoor such.