Understanding the right time to reseed a lawn after pest damage is critical to getting good results. In Iowa, where cool-season grasses dominate and seasonal weather swings are significant, a poorly timed reseeding job will often fail or invite renewed pest pressure. This article walks through identifying pest damage, confirming control, selecting the best seeding […]
Turfgrass in Iowa faces a predictable set of threats each year. Warm, humid summers, cool wet springs and falls, and snow cover in winter create repeated windows where fungal pathogens thrive. Bacterial problems occur less often but can complicate diagnosis and management. This article describes the common fungal and bacterial diseases seen in Iowa lawns, […]
When a minor fungal outbreak appears in an Iowa home garden, swift, informed action prevents spread, salvages plants, and minimizes future risk. This guide walks through practical identification, containment, treatment, and prevention steps tailored to small-scale home gardens in Iowa climate zones, with concrete actions you can take this growing season. How to identify minor […]
Creating a border that looks attractive year-round while minimizing pest problems requires planning, plant selection, and ongoing maintenance. In Iowa, landscape designers must contend with a wide temperature range, heavy snowfall some winters, and a suite of common pests – from Japanese beetles and voles to deer and slugs. This article lays out practical, tested […]
Monitoring disease progression in Iowa orchards is essential to preserve yield, fruit quality, and long-term tree health. The Midwest climate — with cold winters, wet springs, and humid summers — creates conditions favorable for a suite of fungal, bacterial, and viral pathogens. Effective monitoring gives growers the information they need to time cultural practices and […]
Iowa gardeners face a mix of fertile soils, variable spring weather, hot humid summers, and sudden storms. Those conditions are great for plant growth but also favor many fungal, bacterial, viral, and nematode pathogens. Choosing disease resistant varieties is one of the most practical, cost-effective, and sustainable ways to reduce disease pressure and improve harvest […]
Iowa’s climate – cold winters, wet springs, humid summers – favors many fungal diseases in garden beds. Powdery mildew, downy mildew, leaf spots, early blight, and soilborne pathogens like Fusarium and Verticillium are common complaints from home gardeners and landscapers. Choosing the right plants and using planting strategies adapted to Iowa’s conditions is one of […]
Frost and disease can both cause plants to decline, but they leave very different fingerprints. For gardeners, landscapers, and farmers in Iowa, knowing which problem you are facing changes the response: when to prune, whether to spray, and whether to replant. This article gives practical, field-tested ways to tell frost damage apart from common diseases, […]
Fungal spores are the microscopic reproductive units that allow plant pathogens to move, survive, and start new infections. In Iowa vegetable beds, where climate, crop choices, and management practices combine to create variable disease pressure, understanding how spores move is essential for prevention and control. This article explains the biology of spores, the main vectors […]
White grubs are a common and costly problem for homeowners and turf managers across Iowa. These C-shaped, creamy white beetle larvae feed on grass roots and can quickly turn healthy turf into brown, spongy patches that pull up like a carpet. Understanding why white grubs thrive in Iowa lawns requires looking at beetle species, life […]
Preventing beetle infestations in Iowa landscape ornamentals requires a combination of careful plant selection, timely monitoring, cultural practices, and targeted control measures. Beetles that commonly affect Iowa ornamentals include Japanese beetles and their grubs, emerald ash borer, various weevils, and root-feeding scarabs. This article provides specific, practical guidance for homeowners, landscapers, and municipal managers operating […]
Root rot is one of the most common and destructive problems in Iowa gardens. Because symptoms often appear above ground only after significant root damage, early detection and correct diagnosis are critical to save plants and protect soil health. This article explains how root rot develops in Iowa soils, how to spot it early in […]
Pruning is one of the most effective cultural practices for reducing disease risk and improving long-term tree health. In Iowa, seasonal climate, insect vectors, and local pathogens combine to make the timing of cuts as important as the cut itself. This article explains when to prune common Iowa shade trees to minimize disease transmission, how […]
Ornamental landscapes across Iowa are vulnerable to a suite of leaf spot diseases that reduce aesthetic value, weaken shrubs and trees, and in severe cases contribute to branch dieback or plant death. These disorders are caused primarily by fungi and bacteria and are favored by the region’s warm, humid summers and frequent rain events. This […]
Root diseases cause the majority of production losses in container-grown plants. In Iowa’s climate — cool, wet springs and humid summers that favor root pathogens such as Pythium, Phytophthora, Rhizoctonia, and Fusarium — rigorous sanitation of potting mixes, containers, and tools is one of the most effective preventive measures a home gardener, commercial grower, or […]
Growing saplings in Iowa presents both opportunity and challenge. Newly planted trees are especially vulnerable to insect damage because they have limited resources to recover from defoliation, stem feeding, or root attack. This article provides practical, site-specific, and season-oriented strategies to protect young Iowa saplings using an integrated approach: prevention, monitoring, and targeted control. The […]
Tomatoes are one of the most popular crops in Iowa home gardens, and also one of the most vulnerable to a wide array of insect pests. Effective pest management begins with monitoring: regular, methodical observation that lets you detect problems early, distinguish pests from beneficial insects, and make measured decisions that reduce crop loss while […]
Companion planting is a practical, low-cost approach that leverages plant relationships to reduce pest pressure in vegetable plots. In Iowa’s variable climate — humid continental with cold winters and warm, humid summers — companion planting can be an effective part of an integrated pest management (IPM) strategy. This article explains how companion planting works, which […]
Garden disease does not spread evenly or politely. In Iowa, where warm, humid summers and cool, changeable springs favor many fungal and bacterial pathogens, swift removal of the right material can stop an outbreak before it becomes an annual nightmare. This article explains, with concrete steps and seasonal context, exactly what to remove immediately, why […]
Sudden wilting in vegetable beds is a frequent and worrying symptom for home gardeners and small-scale growers in Iowa. When healthy leaves suddenly go limp, plants can die within days if the underlying cause is not identified and addressed. This article walks through the likely causes of sudden wilting in Iowa vegetable production, how to […]
Spotted lanternfly (Lycorma delicatula) is an invasive planthopper that has gained attention for its rapid spread, high reproductive capacity, and potential to damage crops and trees. Understanding how these insects move across Iowa landscapes is essential for landowners, growers, natural resource managers, and transportation agencies. This article synthesizes current knowledge about lanternfly dispersal mechanisms, the […]
Apple scab is the single most common and economically important fungal disease of apple in Iowa. Growers who fight scab season after season know two frustrating facts: the disease can reappear even after rigorous sprays, and once scab is established in an orchard it tends to worsen over time. Understanding why apple scab recurs requires […]
Understanding aphids: what they are and how they behave Aphids are small, soft-bodied insects that feed on plant sap. They come in a variety of colors — green, yellow, black, brown, or pink — and many species that affect vegetables are active in Iowa. Aphids reproduce rapidly, often giving live birth to multiple generations in […]
Oak wilt is one of the most destructive vascular diseases affecting oaks in parts of the Midwest, including Iowa. Early detection is critical: the faster you recognize symptoms and act, the better chance you have of protecting neighboring trees and slowing the spread. This article gives an in-depth, practical guide to recognizing early oak wilt […]
A healthy tree is a long-term investment in an Iowa landscape: it improves property value, provides shade, supports wildlife, and reduces stormwater runoff. But trees get sick. Deciding whether to treat a diseased tree or remove it is one of the most important landscape decisions a homeowner, municipal manager, or property owner makes. The right […]
Iowa vegetable producers routinely contend with a variety of plant-parasitic nematodes that attack roots and reduce yield and quality. This article describes the nematode groups most likely to damage vegetable roots in Iowa, how to recognize their presence, and practical, integrated strategies for management. Emphasis is on clear diagnostic traits, sampling and testing, and viable […]
Monitoring and recording pest activity is the foundation of effective integrated pest management (IPM) for vegetable production in Iowa. Regular, structured scouting lets you detect outbreaks early, choose targeted controls, avoid unnecessary treatments, and measure whether actions worked. This article provides step-by-step, practical guidance on setting up a monitoring program for small vegetable plots or […]
Effective planting buffers are a practical, ecologically sound way to reduce pest movement across Iowa landscapes. Well-designed buffers slow or redirect pests, support natural enemies, enhance biodiversity, and provide additional benefits such as erosion control, pollinator habitat, and visual screening. This article presents concrete design ideas, plant recommendations, management steps, and monitoring approaches tailored to […]
Maintaining clean tools and equipment is one of the simplest and most effective strategies to prevent the spread of plant pathogens in yards across Iowa. Fungi, bacteria, and viruses can be transferred from plant to plant on pruners, shovels, gloves, hoses, wheelbarrows, and mowers. This article provides practical, detailed guidance on how to clean and […]
Mulching is one of the simplest and most powerful cultural practices Iowa gardeners can use to reduce soilborne diseases, conserve moisture, and build healthier soil. When applied thoughtfully, mulch acts as a physical barrier and a biological stimulant that reduces pathogen spread, dampens conditions that favor disease development, and encourages a more disease-suppressive soil microbiome. […]
Vegetable gardeners in Iowa who find slugs in their beds face a familiar and persistent challenge. Slugs can cause significant damage to seedlings, leafy greens, and fruiting vegetables by feeding at night and hiding in cool moist refuges by day. This article provides an in-depth, practical guide to identifying slug problems, understanding slug biology in […]
Verticillium wilt is a soilborne fungal disease that can cause slow decline or sudden wilting and death in a wide range of landscape trees, shrubs, and perennials in Iowa. Because the pathogen lives in the soil for many years and attacks the plant vascular system, symptoms can be confusing and variable. This article describes what […]
Bacterial spot diseases are a recurring concern for fruit growers in Iowa because they can reduce yield, lower fruit quality, and create persistent sources of inoculum that carry through seasons. Understanding how these diseases spread is essential to building an effective prevention and management program. This article explains the biology and epidemiology of bacterial spot […]
Shade trees across Iowa — maples, oaks, lindens, honeylocusts, elms and many ornamentals — commonly host scale insects. Homeowners and city foresters often notice sudden sticky residues, black sooty mold, yellowing leaves, branch dieback, and a slow decline in vigor. Scale may appear to come out of nowhere, but their build-up is predictable once you […]
Root rot is one of the most common and frustrating problems for container gardeners in Iowa. The states climate – cold winters, wet springs, hot humid summers – combined with heavy rainfall events and the use of inappropriately dense potting mixes can create ideal conditions for soilborne pathogens and oxygen-starved roots. This article provides in-depth, […]
Spider mites are one of the most common and destructive microscopic pests in Iowa gardens. They thrive in hot, dry conditions and can rapidly reduce plant vigor, fruit yield, and aesthetic quality. This article explains how to identify the species most likely to affect Iowa gardens, how to monitor and confirm infestations, and step-by-step, practical […]
Fusarium wilt is a chronic, soilborne disease that affects many solanaceous crops grown in Iowa — tomatoes, peppers, eggplant, and to some extent potato. Management requires realistic expectations: once the pathogen is established in field soil, eradication is rarely possible. Decisions about when and how to treat should therefore be guided by crop value, production […]
Overview: Why woody plant diseases matter in Iowa Woody plants–trees and shrubs–are long-term investments in Iowa landscapes. They provide shade, habitat, privacy, and property value, but they also face a broad suite of pathogens favored by Iowa s climate: cool wet springs, humid summers, and the periodic stresses of drought, compaction, salt, and mechanical injury. […]
Diagnosing whether symptoms in Iowa crops and landscape plants are caused by nutrient deficiencies or by disease is essential for effective management. Misdiagnosis leads to wasted inputs, delayed corrective action, and potential yield loss. This article provides a systematic, practical protocol for growers, agronomists, and landscapers in Iowa to distinguish nutrient problems from infectious diseases […]
Understanding the slug problem in Iowa container gardens Slugs are a common nuisance for container gardeners in Iowa. They feed at night on tender leaves, seedlings, flowers, and fruits, leaving irregular holes and a slimy trail that betrays their presence. Iowa’s climate — with wet springs, occasional cool summers, and humid conditions — creates favorable […]
Powdery mildew is one of the most common fungal problems on grapevines and other climbing vines in Iowa. Although the disease rarely kills vines outright, it reduces yield and fruit quality, stresses plants, and can compromise winter hardiness. This article explains how to recognize powdery mildew, how the pathogen behaves in Iowa’s climate, and what […]
Crop rotation is one of the oldest and most effective tools available to vegetable growers in Iowa for reducing disease pressure, preserving soil health, and improving long-term productivity. Properly planned rotations interrupt pathogen life cycles, reduce soil inoculum, and can make chemical and biological controls more effective and economical. This article explains why rotation matters […]
Beneficial insects are essential partners in healthy Iowa gardens. They pollinate fruits and vegetables, control pests, and support overall biodiversity. Planting with beneficial insects in mind increases yields, reduces pesticide dependence, and creates a resilient garden ecosystem. This article explains which plants work best in Iowa, when and how to plant them, and practical maintenance […]
Early blight is one of the most common and damaging fungal diseases of tomato in Iowa and similar Midwestern climates. This article explains in practical detail how to identify early blight on tomato plants, how it develops under Iowa conditions, how to distinguish it from other problems, and what specific cultural and chemical strategies growers […]
Fire blight, caused by the bacterium Erwinia amylovora, is one of the most destructive diseases of apple and pear in Iowa and other temperate fruit-growing regions. Understanding how the bacterium moves between trees is essential for effective prevention and containment. This article explains the biology of spread, the environmental conditions that favor epidemics, common vectors […]
Overview: the surprise of hornworms in backyard tomatoes Tomato hornworms are one of the most dramatic — and alarming — pests a home gardener can find on a healthy tomato plant. One day the plants look fine, the next day a large green caterpillar has eaten half a branch. In Iowa, these events often feel […]
Understanding the threat: soybean aphid biology and behavior Soybean aphid (Aphis glycines) is a small, sap-sucking insect that can reproduce rapidly on soybean and cause substantial yield loss if left unchecked. In the Upper Midwest, populations typically build rapidly in late vegetative to early reproductive stages after colonization by winged migrants in the spring. Aphids […]
Bagworms (Thyridopteryx ephemeraeformis) are one of the most damaging defoliators of ornamental and shade trees in Iowa. Left unchecked, they can strip foliage from arborvitae, juniper, spruce, maples and many other species, weakening and sometimes killing high-value landscape trees. This guide explains how to identify, monitor, prevent and control bagworms using an integrated, season-long approach […]
Gardening in Iowa rewards patience with healthy, productive plants, but the region’s humid summers and variable springs also create ideal conditions for fungal diseases. Knowing when to apply fungicides is as important as knowing which product to use. Apply too late and you may lose fruit or foliage; apply too often or at the wrong […]
Iowa’s landscape — from urban streets and shelterbelts to woodlands, prairies, and agricultural fields — is vulnerable to a growing suite of invasive insects and plant diseases. These agents can change species composition, reduce biodiversity, and cause economic losses in forestry, horticulture, and crop production. This article surveys the most consequential invasive insects and diseases […]
Gardening in Iowa offers rich rewards but also unique challenges. The state’s continental climate, characterized by hot humid summers and cold winters, creates conditions favorable to many plant diseases. Effective disease management starts with accurate diagnosis and follows with targeted treatments and prevention. This article provides a step-by-step, practical approach to diagnosing and treating plant […]
Orchard disease management in Iowa requires a mix of prevention, timely intervention, and season-long vigilance. The state’s humid summers and variable springs create favorable conditions for a range of fungal and bacterial pathogens that attack apples, pears, cherries, peaches, and plums. This article presents in-depth, practical strategies for reducing disease pressure, preserving tree health, and […]
Preventing turf grubs and other lawn pests in Iowa requires a combination of timely monitoring, sound cultural practices, targeted biological controls, and judicious use of chemical treatments when necessary. This article provides an in-depth, practical guide tailored to Iowa’s climate, common pest species, and lawn types. Follow these recommendations to reduce damage, promote a healthy […]
What integrated pest management (IPM) means for Iowa agriculture Integrated Pest Management (IPM) is a systems-oriented approach to managing pests that emphasizes prevention, monitoring, and the use of multiple compatible tactics to keep pest populations below economically damaging levels. For Iowa growers–where corn, soybeans, and specialty crops dominate–IPM reduces reliance on routine, calendar-based pesticide applications […]
Gardening in Iowa means dealing with a wide range of pests: deer and rabbits in the suburbs and country, voles and chipmunks in turf and beds, and insects like Japanese beetles, squash bugs, and aphids in vegetable and ornamental plantings. Plants alone rarely eliminate pest problems, but choosing the right species and arranging them strategically […]
Cedar-apple rust is a visually dramatic and biologically complex fungal disease that shows up every spring in Iowa orchards and in home landscapes where apple, crabapple, hawthorn and eastern red cedar (Juniperus virginiana) grow near one another. This article describes what cedar-apple rust looks like on different hosts, explains the disease cycle and seasonal timing […]
Overview: why spread matters in Iowa Emerald ash borer (Agrilus planipennis), often abbreviated EAB, is an invasive beetle species that has killed millions of ash trees across North America since its detection. In Iowa, ash species are common in urban, suburban, and rural landscapes, and the continued spread of EAB threatens street trees, windbreaks, shelterbelts, […]
Corn rootworms are the single most persistent and costly insect pest of corn in Iowa. Despite decades of research, crop rotation, transgenic hybrids, seed treatments, and soil insecticides, rootworms continue to cause economic injury across broad swaths of the state. Persistence results from a mix of biological resilience, behavioral adaptation, landscape and agronomic practices that […]
Tomato blight is one of the most common and damaging diseases for home gardeners in Iowa. Both early blight (caused by Alternaria solani) and late blight (caused by Phytophthora infestans) find favorable conditions in the humid, warm spells that occur in late spring and summer here. Preventing blight requires a combination of site selection, sanitation, […]
Japanese beetles are one of the most conspicuous and destructive insect pests in Iowa gardens. They skeletonize leaves, chew flowers and fruit, and can cause rapid aesthetic and yield loss on roses, grapes, raspberries, and many ornamental trees and shrubs. This article explains how to monitor, prevent, and control Japanese beetles in Iowa using integrated, […]