Where Do Ticks Live?

Quick answer

Blacklegged (deer) ticks live mostly in wooded, brushy and grassy places where the ground stays shady and damp, such as leaf litter under trees and the edges where woods meet lawns and trails. They wait on low plants and grab on as you pass. Many people pick them up close to home, in their own yard.

How ticks find you

Ticks cannot fly or jump. They have to touch you directly. A tick climbs onto a leaf, a grass tip or a low branch, holds on with its back legs and waits for something to brush past. This waiting is called questing. The Connecticut Agricultural Experiment Station (CAES) explains that young ticks mostly stay in low vegetation because they dry out easily, while adults may wait higher up in the shrub layer, a few feet off the ground.

That is why where you walk, sit and work matters so much. Each spot below comes with a simple tip.

Wooded areas and the forest floor

Blacklegged ticks are most common in the woods (CAES). The layer of dead leaves on the forest floor, called leaf litter, keeps the ground cool and moist, which is what ticks need. In California, the UC Statewide IPM Program says western blacklegged nymphs are most plentiful in dense woodlands with trees such as oak, madrone or Douglas fir. They wait in or on leaf litter, on logs and on the lower few feet of tree trunks.

What to do there: Stay on cleared paths. UC IPM notes that sitting on logs, leaning against tree trunks, gathering firewood and gardening in these areas raise the chance of meeting nymphs, so check yourself afterward.

Edges where woods meet lawns, fields and trails

The border between woods and open ground is one of the riskiest spots. CAES reports that 82% of deer ticks found on lawns were within about 9 feet of the lawn edge, especially next to woods, stone walls or ornamental plantings. In California, adult western blacklegged ticks are common where grassland borders brush or forest.

What to do there: At home, CDC suggests a 3-foot-wide strip of wood chips or gravel between lawn and woods, and keeping play sets, decks and patios away from the yard edges.

Tall grass, brush and overgrown plants

Do ticks live in grass? Yes, but not all grass is the same. CDC lists grassy and brushy areas as tick habitat and advises keeping tall grass and brush cut back around the house and lawn edges. Adult western blacklegged ticks wait on low plants in grassland, woodland-grass and brush (UC IPM). On the other hand, sunny, well-kept lawns hold fewer ticks (CAES), and CAES says ticks are unlikely to be found in open fields. Risk rises where grass and brush meet trees and shade.

What to do there: Mow often, clear brush and avoid wading through tall, overgrown plants, especially near woods.

Shady, humid spots

Humidity is a matter of life and death for a tick. Blacklegged ticks need high humidity to survive (CAES). In lab work cited in the CAES handbook, nymphs lived more than six months at very high humidity, but more than half died in under four days at 65% relative humidity. Shade keeps the ground damp, which is why CDC suggests trimming trees and shrubs to let more sun reach the ground. In California, adult activity is highest when the air is cool and humid (UC IPM).

What to do there: Treat cool, shaded, leafy ground as tick country, even in a small yard. Let sunlight in where you can.

A note on water: we did not find a source saying that streams, rivers or ponds themselves draw blacklegged ticks. What the sources stress is moist, shaded ground such as leaf litter in the woods. The CAES handbook does say American dog ticks are common in marshy areas, among other places.

Stone walls and places small animals live

The white-footed mouse is the principal animal reservoir of the Lyme bacteria (CAES), and birds are a major host for young blacklegged ticks. Stone walls close to the house give shelter to mice and chipmunks, and CAES recommends cleaning them up. CDC adds that old furniture, mattresses and trash can give ticks places to hide.

What to do there: Stack firewood neatly in a dry spot and keep woodpiles away from the house (CDC, CAES). Clear out clutter near the lawn.

Your own backyard

You do not need to go hiking to meet a tick. The CAES handbook says about three out of four Lyme cases are linked to activities around the home, such as yard and garden work. Garden beds and ground covers like pachysandra next to the lawn edge can hold ticks (CAES).

What to do there: Remove leaf litter, mow, and keep swings, sandboxes and patios away from the woods and tall plants (CDC). Wear protective clothing for leaf clearing and garden work, and do a tick check when you come inside. See our Lyme disease prevention guide for repellents and clothing.

Trails, parks and campsites

Parks, playing fields and campgrounds can sit right next to woodland edges, and edges are where ticks wait. CAES suggests noticing how close woods or mixed grass and brush are to recreation areas and playing fields. In California, adult ticks are often found along the edges of trails, especially the uphill side of hillside trails (UC IPM).

What to do there: Walk in the center of the trail (CDC), avoid brushing against grass and brush, and choose a picnic or camp spot away from leaf litter, logs and tree trunks.

Pets bringing ticks inside

Ticks can ride into the home on clothing and pets, then attach to a person later (CDC). Dogs and cats can get Lyme disease, but there is no evidence they spread it directly to people (CDC). Ticks generally do not settle in homes: the CAES handbook says American dog ticks will not become established indoors, and blacklegged nymphs dry out quickly in typical indoor air.

What to do there: Check pets every day they go outdoors, and ask your vet about tick prevention. Do not put any tick product on a cat without asking your vet first (CDC). Read more in Lyme prevention for dogs.

When ticks are out: seasons and nymphs

Nymphs, the young stage of the tick, are tiny. CDC notes that an adult female and a nymph could both fit on one index finger, and both stages bite people. In the Northeast, May, June and July are the peak months for nymphs (CAES). In northwestern California, nymphs are most active from March to July (UC IPM). Adult blacklegged ticks are active in fall and spring and on winter days above freezing (CDC, CAES).

Other ticks you may see

Not every tick spreads Lyme. CDC does not list Lyme among the diseases spread by the lone star tick (common in the Northeast, South and Midwest) or the American dog tick (widespread east of the Rocky Mountains). They can spread other illnesses, though. The CAES handbook says American dog ticks are most common along roadsides, paths, marshy areas and trails in brushy woods or meadows. Learn to tell them apart in ticks that carry Lyme disease, and check risk in your area with Lyme disease by state.

Higher-risk vs lower-risk spots

Myths about where ticks live

Myth: Ticks drop on you from trees. The CAES handbook is clear that ticks do not jump, fly or drop from trees. They grab on from leaf litter and the tips of grass and other plants.

Myth: Ticks only live deep in the forest. Many people get ticks in their own yard or neighborhood (CDC).

Myth: Ticks die off in winter. Adult blacklegged ticks can be active any time winter temperatures are above freezing (CDC).

Knowing where ticks live is the first step in our How to beat Lyme plan: prevent the bite in the first place.

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