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Pest, Disease & Weed Timing Calendars
Scouting calendars and timing for insects, weeds and disease, with label-first guidance.
50 guides
- Pest Scouting Calendar for Vegetables
A scouting calendar for vegetables works best when it follows the crop and the weather, not the wall calendar. Here is how to build one you will... - Pest Scouting Calendar for Field Crops
Field crop scouting pays off when it follows growth stages from emergence to harvest. This guide lays out a calendar built on stages, weather and a... - Pest Scouting Calendar for Orchards
Orchard pest timing runs on tree development and accumulated heat, not on a date. Here is how to build a scouting calendar around both. - Insect Life Cycle and Timing
Insects develop with heat, so knowing the life cycle tells you when to look. This guide explains the stages and how timing really works. - Aphid Monitoring Calendar
Aphid populations can climb quickly, so a steady monitoring routine matters more than any single date. Here is how to set one up. - Caterpillar Monitoring Calendar
Caterpillars do their damage in a short window after eggs hatch, so good monitoring looks for moths and eggs before the feeding starts. - Beetle Monitoring Calendar
Beetle pests share a pattern: adults overwinter, emerge in spring, feed, lay eggs and produce a feeding generation of larvae. Your monitoring can... - Fly Monitoring Calendar
Many damaging flies are active at seedling time, and they follow temperature and crop stage. Here is how to build a calendar that catches them early. - Thrips Monitoring Calendar
Thrips are small enough to be missed until damage shows, so monitoring needs tools, a routine and attention to weather. - Mite Monitoring Calendar
Mites are not insects, but they are scouted like them. Heat and dry weather speed them up, so your calendar should follow the forecast. - Slug and Snail Calendar
Slugs and snails are driven by moisture and mild weather. A good calendar follows rain, humidity and crop stage, not the day of the month. - Grasshopper Calendar
Grasshopper outbreaks are driven by the previous year's egg laying and by spring and summer weather. Scouting early, along field margins, gives you... - Stink Bug Calendar
Stink bugs move between hosts through the season, so your calendar should follow the crops they favor at each stage, from early spring to harvest. - Squash Bug Calendar
Squash bug timing follows the plant. Adults arrive as vines grow, eggs appear on leaves, and the nymphs that follow do the most harm. - Colorado Potato Beetle Calendar
Colorado potato beetle timing runs from overwintered adults to egg masses to feeding larvae. Knowing the sequence tells you when to walk the rows. - Corn Earworm Calendar
Corn earworm risk in sweet corn peaks around silking, and trap catches of moths tell you when to pay closest attention. - Cabbage Worm Calendar
Several caterpillars feed on cabbage-family crops. A weekly check from transplanting to harvest catches them while they are small. - Tomato Hornworm Calendar
Tomato hornworms are easy to overlook when small and hard to ignore once large. A weekly check in midsummer finds them early. - Disease Forecasting Calendar
Plant diseases need three things at the same time: a susceptible plant, a pathogen and the right weather. Forecasting watches all three. - Fungal Disease Timing Calendar
Most fungal diseases begin when spores meet a wet susceptible plant. A timing calendar follows moisture and crop stage to find those moments. - Bacterial Disease Timing Calendar
Bacterial plant diseases are hard to treat once they take hold, so timing is mostly about prevention: clean seed, dry foliage and careful handling in... - Viral Disease Vector Calendar
Plant viruses cannot be cured, so the calendar that matters is the one for the insects that carry them, along with clean planting material. - Root Rot Timing Calendar
Root rot is decided in the soil, often weeks before plants show it. Watching soil moisture and temperature gives you the real calendar. - Blight Forecasting Calendar
Blights can move quickly in the right weather. A forecasting calendar combines weather risk, crop stage and regular scouting. - Mildew Timing Calendar
Powdery mildew and downy mildew sound alike but behave differently. Knowing which one you face tells you what weather to watch. - Rust Timing Calendar
Rust diseases do not follow the calendar. They follow spore arrival, mild wet weather and how far the crop has grown, so a useful rust calendar is... - Wilt Disease Calendar
Wilt fungi live in the soil for years, so the calendar that works is mostly about decisions made before planting and sanitation after the crop is... - Damping-Off Prevention Calendar
Damping-off kills seedlings before or just after they emerge, and nearly every prevention step is a matter of timing and cleanliness rather than... - Weed Germination Calendar
Every weed species has its own wake-up cue, and learning those cues turns a vague weed problem into a schedule you can plan around. - Weed Scouting Calendar
Weeds are easiest to deal with in the first few weeks, which means the calendar that matters is a series of short, regular field walks. - Pre-Emergent Herbicide Timing
A pre-emergent herbicide only helps if it is in place before weeds germinate and gets moved into the soil surface by rain or irrigation, so timing is... - Post-Emergent Herbicide Timing
Postemergence control works on weeds that are already up, and it works best when they are small, actively growing and sprayed within the crop stage... - Cultivation Timing for Weed Control
Cultivation kills weeds mostly by uprooting or burying seedlings, so it works best when they are tiny and the soil is dry enough to let them die. - Mulching Timing for Weed Suppression
Mulch keeps weeds down by blocking light, but laid at the wrong moment it can chill soil, trap weeds under it or hide pests. - Cover Crop Weed Suppression Calendar
A cover crop can shade out weeds, but only if it is seeded early enough to build cover and ended at a time that suits the next crop. - Integrated Pest Management Calendar
Integrated pest management is a cycle of prevention, monitoring, decision and review, and a calendar helps you run that cycle on time instead of... - Beneficial Insect Release Calendar
Releasing beneficial insects works when the pest is present, the weather suits the helper and nothing in the field will kill it, so the release date... - Trap Crop Planting Calendar
A trap crop only works if it is more attractive than the main crop at the moment the pest shows up, which makes planting date the key decision. - Pheromone Trap Timing
Pheromone traps tell you when adult moths arrive, and that date helps you decide when to start scouting for eggs and larvae. - Biological Spray Timing
Biological sprays rely on living organisms or natural compounds, so they are more sensitive to timing, weather and coverage than many growers expect. - Organic Pest Control Calendar
Organic pest control puts most of its effort before the pests arrive, so the calendar leans on prevention and observation, with approved inputs as a... - Pollinator-Safe Spray Calendar
Protecting pollinators comes down to when you spray, what is blooming and where the spray goes, and each of those can be planned. - Pesticide Application Timing by Crop Stage
Every pesticide label ties use to crop growth stages, so knowing exactly where your crop is on a growth stage scale is the first step in timing any... - Pre-Harvest Interval Calendar
A pre-harvest interval is a hard stop on the calendar, and the simplest way to respect it is to plan backward from your harvest dates. - Resistance Management Calendar
Resistance develops when the same kind of control hits the same pest again and again, so a good calendar rotates tools and counts applications across... - Greenhouse Pest Calendar
Greenhouse pests breed fast in warm, sheltered conditions, so the calendar that works is built on clean starts, steady monitoring and quick, informed... - High Tunnel Disease Calendar
High tunnels trap humidity and warmth, which helps crops but also helps disease, so the calendar centers on airflow, dry foliage and clean ground. - Post-Harvest Sanitation Calendar
What you do in the weeks after harvest decides how many pests and diseases are waiting for next year's crop. - Fall Pest Cleanup Calendar
Fall cleanup is a balance between removing places where pests overwinter and leaving shelter for beneficial insects, and timing it by frost and crop... - Annual Pest and Disease Calendar Template
The most useful pest and disease calendar is one you build from your own fields, weather and records, using extension guidance to fill the gaps.