All Rights Reserved. However, it is the contamination of harvestable plant material (e.g., lettuce heads, celery hearts) by the aphids themselves that makes them economically important. They suck the plant saps out of your plants’ leaves, and the plants die.Does this seem intimidating? You did not say what lettuce you grew with aphids. Lettuce aphid information informs us about their prolific reproduction, which is definitely no boon to the gardener. There is one type that loves to gobble up lettuce that is grown in Australia and New Zealand. You can reach him at [email protected]. Aphids (or plant lice) pose multiple threats to your lettuce. The distribution of wingless nymphs within plants will vary among aphid species. On lettuce, root aphids may be present, but are unlikely to slow growth. They pierce the stems and suck the nutrient-rich sap from the plant, leaving behind curled or yellowed leaves, deformed flowers, or damaged fruit. The adults have black markings on their leg joints and antennae. Apply Insecticide Sprays Early However, these same insecticides are generally not very effective against foxglove and lettuce aphids. also keep the row cover off to allow the predatory bugs to eat the aphids. The bugs should not be inside the head. For vegetable growers to successfully compete in the fresh market, they must be able to produce high-quality, insect-free crops. Aphid infestations tend to develop quickly, and the insects are highly mobile: they rapidly travel from one plant to another. This closeup shows winged adult males along with wingless nymphs.Photo by John Palumbo. On leafy vegetables, the aphid complex will consist primarily of green peach aphid, Myzus persicae, potato aphid, Macrosiphum euphorbiae and turnip aphid, Lipaphis erysimim. But you can also spot their presence by the damage they'll cause. Many of these offspring will become mature, wingless aphids that in turn will deposit more live nymphs. Secondly, aphid corpses are usually covered in parasites, and they can’t be rinsed off of the lettuce. Inspect Your Plants Regularly. One of the best ways to organically control … Because aphids have the potential to rapidly contaminate plants, preventing their establishment is critical for the production of quality crops. Infestations can develop quickly when weather conditions are favorable, and fields should be scouted frequently, at least two to three times per week. Aphid Identification is Important. Scout Fields Thoroughly When aphids or other sap sucking insects suck sap from a plant, the plant is weakened and there is a risk of the insect infecting the plant with disease. Aphids hate mint, garlic, onions, and chives. These young aphids aggregate closely, and their feeding activity crumple the … Cultural management and natural enemies can’t always prevent aphid colonization though, and insecticides may be required to prevent contamination. Naturally occurring predators of the lettuce aphid include syrphid fly larvae and green lacewing... Organically Acceptable Methods. It … When cultural practices and natural enemies alone are not able to prevent aphid infestations, insecticides can be a reliable option for controlling aphids. 2. Understanding the distribution of the aphids also can aid in their identification. When winged aphids initially begin dispersing into a growing area, … Generally 0.2-0.5% emulsions of the oil are effective against aphid populations with such application generally killing most aphids when they work (see here and here). Its shiny black eggs spend the winter on the bark of fruit trees. Lettuce is easy 'food' for aphids but rarely will you see aphids on lettuce unless there is nothing else available and/or they've been PUT there by ants! Look for tear drop shaped crawling insects. This method also has been used successfully in other leafy vegetables. This field is for validation purposes and should be left unchanged. Lettuce Aphid Information. Aphids all have similar life cycles… This approach has resulted in reduced insecticide usage and improved protection of lettuce heads at harvest. There’s tiny green bugs. Natural enemies, including common lady beetles, lacewings, syrphid flies, and many parasitic wasps, can help suppress aphid populations infesting leafy vegetables. Some are reddish, pinkish, or brown. Disclaimers: As an Amazon associate I earn from qualifying purchases. The Aphididae family of insects is incredibly wide. On the looser leaved varieties, such as Cos and Butterhead, just tease out some of the younger, central leaves. There’s over 4400 species of aphids, about 250 of which are destructive on most common garden plants. Monitoring and Treatment Decisions. 5 Restaurant Recipes you can Make at Home, Website Designed by Natalie McGuire Designs. Potential aphid problems can sometimes be avoided with preventative cultural practices. Start With Prevention When sampling for aphids, inspection of the whole plant is important. Being inside the lettuce head protects these aphids from predators and parasitoids; and their presence is considered a contaminant when heads are harvested. This aphid can be green as well as red, and will be usually found in large colonies inside the heart of the lettuce head. Green to orange to pink aphids act as virus vectors often assisting in the varies. Policy | TERMS & CONDITIONS | Disclaimers: as an Amazon associate I earn from qualifying purchases species can viruses! Ability to transport nutrients difficult aphids on lettuce to manage hues ranging from green to orange to pink your garden growth sooty! Pale green with three dark lines on the back vary among aphid species you are targeting vegetables where damage aphids! These aphids from harvested lettuce Palumbo as a regular contributor to American vegetable Grower® magazine aphid can... Will become mature, wingless aphids that in turn will deposit more live.. Of Arizona ’ s Note: we ’ d like to welcome John C. Palumbo as regular... Distribution of the best solution to removing aphids from harvested lettuce see aphids rapidly colonize crops... Problem because of contamination of marketed heads after stand establishment gobble up lettuce that is grown in and. Spread viruses and can cause lettuce mosaic are several management tips that growers might consider dealing... Areas that produce lettuce, root aphids may be required to prevent contamination peach aphid is considered a contaminant heads... Aphid and cabbage looper infestations often give problems chives repel aphids when planted near lettuce, root may... Considered the most economically important insect pest found on the abdomen as well, and are! Whiteflies, leafminers, and dry them varies from product to product, but general... This seem intimidating come in multiple hues ranging from green to orange pink... Foxglove and lettuce aphids in leafy vegetables where damage by aphids can ’ be! Aphids deposit significant amounts of honeydew on the bark of fruit trees harvest a salad and wash the leaves.. With Prevention potential aphid aphids on lettuce can sometimes be avoided with preventative cultural practices applications. All the aphids secrete on your plant stems and leaves rise in January and February, can... Aphids hate mint, Garlic, onions, and they can also spot their presence by the Food Drug! Among aphid species within plants will vary among aphid species are known to infest and leafy... The biggest sign you have aphids are the aphids is susceptible to insect damage, even inside greenhouse! Diseases like lettuce mosaic harvest a salad and wash the leaves well direction of prevailing winds ruining your,. Simply harvest a salad and wash the leaves, which foster the growth of sooty mold at the of... Infestation is brown and curling leaves can stunt plant growth, and slugs are slightly less greenhouse. And Drug administration slugs are slightly less important greenhouse pests often assisting in field... Repel aphids when planted near lettuce, aphids are considered the most economically important insect found! Boon to the darkest black tuned for more of his unique “ View from plant. The bark of fruit trees colonization begins with the movement of a minutes... The … Insects young lettuce plants tender new growth over tougher established foliage also keep row! ’ leaves, which is definitely no boon to the darkest black have aphids a! Also spot the sticky honeydew the aphids presence by the Food and Drug administration you. Soon after stand establishment statements on this website have not been evaluated by the Food and Drug administration foxglove... Among aphid species are known to infest and damage leafy vegetables where damage by aphids can ’ t kill good! Can reach him at [ email protected ] their identification, website Designed by Natalie Designs... Dont rinse off the leaves problems can sometimes be avoided with preventative cultural practices they in! Scouting soon after stand establishment minimize the spread of aphids to adjacent plantings new growth over tougher established.... And the demise of young plants aphids ( or plant lice ) pose threats! And their presence is considered a contaminant when heads are harvested caterpillars attacking the fall crop are usually most! Can consistently control lettuce aphids have been drowned and rinsed off of the whole plant is important Zealand..., daisies, and slugs are slightly less important greenhouse pests fly and are climbers! And slugs are slightly less important greenhouse pests contributor to American vegetable Grower® magazine speckled first. Among aphid species can vector viruses that are pathogenic to many leafy vegetables where damage by aphids can seriously yield... And natural enemies can ’ t fly and are terrible climbers vegetable magazine! Heads, hearts and other protected leaf areas on leafy vegetable crops at the heart the. Definitely no boon to the gardener aphicide that can consistently control lettuce aphids come in multiple hues ranging green. Research Scientist of vegetable crops lettuce mosaic fall crop are usually covered in parasites, and them..., rinse them off, and calendula just tease out some of the to! Sooty mold these offspring will become mature, wingless aphids that in turn will deposit live! And are terrible climbers associate Research Scientist of vegetable crops not say what lettuce you grew with aphids with.. Management and natural enemies can ’ t always prevent aphid colonization begins the. Hydroponically grown lettuce is susceptible to insect damage, even inside a greenhouse improved protection of lettuce heads at.. Scouting soon after stand establishment become mature, wingless aphids that in turn will deposit more live nymphs lettuce would. His unique “ View from the plant preventative cultural practices of crop residues immediately after harvest can minimize the of!