Indiana Department of Health entomologists have found the blacklegged tick in all but three Indiana counties, and a 2025 Purdue Extension summary describes it as established in nearly all of them. Nymphs are most active from May to July. Adults can be active from fall and on warm days through winter into spring.
Key takeaways
- Indiana Department of Health entomologists have found the blacklegged tick in all but three Indiana counties.
- A 2025 Purdue Extension summary describes the blacklegged tick as established in nearly all Indiana counties.
- Nymphs are most active from May to July, the stretch when woodlot and field-edge work deserves the most attention.
- Adults can be active from fall and on warm days through winter into spring, so the season does not end in October.
- Brush, tall grass and leaf litter along woodlot edges and fence lines are where ticks tend to be found.
- The state's own tick information, not a rating on a sales page, is the place to check current county-level figures.
Where do ticks live on a farm?
Ticks tend to be found in the transition zones around a farm: the edge of a woodlot, brush along a fence line, and tall grass where a field meets a wooded strip. They are usually not in the open middle of a cropped field.
A woodlot in east-central Indiana is a mix of trees, brush and leaf litter, and that cover is the kind of place ticks prefer. Most of the ticks a homeowner meets are on the edges, where the woods meet a mowed yard, a fence line or a field road. The woodlot is not the only place, though. Brushy hedgerows, creek banks and the rough grass along a drive can hold ticks as well, and a path cut through those areas is a route that people and pets often take.
Farm dogs and outdoor cats bring ticks back to the house, and so do workers and visitors who spend time in the rough. A tick can drop off in a barn, a vehicle or a shed well after the walk that picked it up. The practical habit is simple: check animals and people after time at the edges, and check the gear and clothing that was out there. The flea and tick control service covers the property side of this work.
When are ticks most active?
Nymphs are most active from May to July. Adults can be active from fall and on warm winter days, and they can stay active into spring when the weather allows. The season is a pattern rather than a single date.
The nymph stage is the small one, and it is the stage most people do not expect to find. It is most active from May to July, which lines up with the stretch when the woods are full of leaves, the field edges are green and people are outside more often. A walk through a woodlot in June is a different job from a walk in February, and the chance of meeting a tick is not the same across the year.
Adults follow a different pattern. The state's information says adults can be active from fall, and they can be active on warm days through winter into spring. A thaw in January can bring ticks out on a field edge, and a mild day in March does not mean the season is over. Plan checks across the whole span rather than for one month, because the warm days that bring people outside are the same days that bring ticks out.
How widespread are blacklegged ticks in Indiana?
The blacklegged tick is established across nearly all of Indiana, based on findings by state entomologists and a 2025 Purdue summary. County-level figures change, so the state's current information is the place to check any specific county.
The species is well established in the state, and that is the basic fact a homeowner needs. Indiana Department of Health entomologists have found it in every county except three. Being present in a county does not tell you how many ticks are on a particular woodlot, and what usually decides a property's exposure is how much edge, brush and animal traffic it has. The county figure is a regional picture, and the property is a separate question.
For county-level detail, read the state's own tick information rather than a figure on a contractor's site or a summary from elsewhere. The Indiana Department of Health publishes a dashboard on ticks, and that is the place to check current information. Treat any single number with care, and note the date and the source when you find one. A rating in a sales pitch is not a substitute for the state's record.
What can a homeowner do on the property?
Keep the edges cleared, check people and animals after time in the rough, and focus on the margins where ticks tend to wait. These ordinary steps reduce contact with the places ticks use, though no single step makes a property tick-free.
Clearing a strip of brush and tall grass between the lawn and the woods changes what a tick finds when it reaches the yard. Keep mowing the edge, cut back brush along fence lines and clear leaf litter piled against the house. The mechanism is simple: ticks are most often where the cover is thick and the air is damp, so reducing that cover narrows where they can wait. This does not make a property tick-free, and no single step does.
Pets are part of the same plan. A dog that runs the field edges brings ticks back to the house, so check it after walks and talk to a veterinarian about a tick product that suits your animal. Do not use a product on a pet that is not labeled for that animal. For people, long sleeves, light colors and a check after time outdoors are the ordinary steps. A shower soon after time in the rough can also help wash off a tick that has not yet attached.
When does a property need professional tick work?
Professional tick work fits a property with heavy brush, a recurring problem near the house or animals that spend a lot of time at the edges. A technician can look at the edges, the animal areas and the outbuildings, then recommend what fits.
A professional visit tends to start with an inspection rather than a treatment. The technician walks the edges, looks at the brush along drives and fence lines, checks where animals rest and notes any outbuilding where ticks or their hosts gather. From there the plan can include clearing advice, treatment of specific margins and a schedule timed to the tick season. The point is to match the work to the property rather than to spray the whole yard.
The timing of the visit matters. A plan for the May-to-July nymph window is different from one for the fall and warm-winter adult period, and a single visit in midsummer does not cover the whole year. Ask the technician how the plan covers the seasons, and what the follow-up looks like. The technician confirms the price on site before any work starts, so the first visit is also the time to ask about cost.
What do the state's tick numbers actually show?
State tick information shows where the species has been found across Indiana. It does not show what is on a single property, so it is a guide to the region rather than a verdict on one woodlot.
State reporting is useful for a broad picture. It can tell you that the species is established across nearly every county, and it can show where the state has collected data over time. It does not tell a farmer whether one field edge has more ticks than the next, because that depends on the brush, the animals, the wildlife that passes through and the way the land is used.
Be careful with online summaries that turn a regional picture into a single risk score for a town. Ticks do not stop at county lines, and a figure for one county says little about the field next to it. Go back to the state's own pages and read the date on any figure before relying on it. When a number matters, the state is the source to trust, and a summary that does not name its source is not.
What should a property owner do after finding ticks?
Note where the ticks were found, check animals and people, and reduce the cover near the house that holds them. If the problem keeps returning, a professional inspection of the edges is the next step.
Write down where the ticks were found, what time of year it was and what the animals had been doing. A simple log shows patterns, such as a particular fence line that keeps producing ticks after walks, and it gives a technician something concrete to inspect. Keep the log with other property records, so the history is there the next time someone asks what happened in a given season.
This guide covers the property and the pest, not medical care. Questions about a bite, a rash or an animal's health belong with a doctor or a veterinarian. Pest work is about the property: the edges, the brush, the outbuildings and the paths people take. That is the part a technician can change, and it is where a plan starts.
Frequently asked questions
Are blacklegged ticks found in Blackford County?
Indiana Department of Health entomologists have found the blacklegged tick in all but three Indiana counties. The state's current county information is the reference for any specific county, and it is the figure to trust over a single number from a commercial site. Check the date on whatever you find, because county figures change over time.
When is the best time to check for ticks?
Nymphs are most active from May to July, so that is the stretch to watch most closely. Adults can be active from fall and on warm days through winter into spring, so checks do not stop in October. Plan on checks across most of the year rather than one season. A walk on a warm winter day can be as useful as one in June.
Do I need a professional for ticks?
A professional visit makes most sense when a property has heavy brush, recurring problems near the house or animals that spend a lot of time at the edges. A technician can inspect the margins, advise on clearing and suggest treatment for specific areas. The technician confirms the price on site before any work starts. Ask how the plan covers the tick seasons.
Where do ticks usually wait?
Ticks tend to be found where cover is thick and damp: the edge of a woodlot, brush along fence lines, tall grass and leaf litter. They are less often found in the open middle of a cropped field. Clearing a strip between the lawn and the woods reduces that cover. No single step makes a property tick-free.
Where can I get the latest tick information from the state?
The Indiana Department of Health publishes a dashboard on ticks, and that is the place to find current information. Check the date on any figure before you use it. A local rating from a company or a summary site is not a substitute for the state's record. Keep a note of the source and date for your own records.
Who should I ask about a tick bite?
A doctor is the right person for any question about a bite, a rash or a health concern. This guide covers the property and the pests, not medical care. Bring a note of where and when the tick was found, so the details are clear at the appointment. A question about an animal belongs with a veterinarian.
Sources
This guide is general information for Blackford County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.