Where are blacklegged ticks found in Philadelphia?
Blacklegged ticks have been found at 29 of 41 city sites sampled by the Philadelphia health department since 2013, according to the city's health advisory. They wait in leaf litter, tall grass and shrubs along the edges of parks, creeks and wooded lots. Yards that border those habitats carry the most risk.
The city's tick advisory reports that about 40 percent of pooled samples tested positive for Lyme disease bacteria between 2013 and 2025. That figure describes the samples the city tested, not the risk in any single yard, but it is a reason to treat tick control as a planned part of yard care.
The lone star tick was first identified in the city in 2020, according to the same health advisory. Blacklegged ticks are found in all 67 Pennsylvania counties, so the species is a concern across the region, not only in the parks.
Do ticks only live in woods?
No. Ticks wait in any vegetation where a host is likely to pass, including a lawn edge, a shrub bed and leaf litter piled against a fence. They do not need a forest to survive. The risk in a yard follows the edges, the shade and the wildlife that cross the property.
A small yard can still hold ticks if it has shade, damp leaves and a path for deer or mice to cross. The technician looks at the whole property, including the places where a lawn meets a fence, a shed or a garden bed. Those edges are where the risk is concentrated.
Animals that cross the yard bring ticks with them, and pets that roam can carry them into the house. The plan addresses the path the animals use, as well as the lawn itself, so the household is not relying on the treatment alone.
What should a household do after time outdoors?
Check people and pets for ticks after time outdoors, especially in the hair, behind the ears, under the arms and along the waistband. Remove an attached tick with fine tweezers as close to the skin as possible. A bite followed by a rash or fever should be discussed with a doctor promptly.
Showers and clothing checks catch many ticks before they attach. Light-colored clothing makes ticks easier to see, and tucking trousers into socks on a walk through brush reduces the chance a tick reaches the skin. These steps are simple, and they work alongside the yard plan.
Pets should be checked after walks and yard time, particularly after they have been in tall grass or leaf litter. Ask the veterinarian about tick prevention for pets, since the right product depends on the animal and the region.
- Check hair, behind the ears and along the waistband after time outdoors
- Use fine tweezers to remove an attached tick close to the skin
- Check pets after walks, and ask a veterinarian about prevention
When is tick activity highest?
Ticks are generally active in the warmer months, and activity can continue into the autumn. The exact months vary with the weather and the species, so a plan is set for the season rather than to a single date. Checking the yard in spring and again in late summer is a sensible rhythm.
Tick activity depends on temperature and moisture, and it can shift from year to year. A wet spring or a mild autumn can extend the season, and the technician adjusts the follow-up visits to the conditions the yard has shown.
Because ticks wait for hosts in the vegetation, the timing of yard work matters too. Clearing leaf litter in the early season reduces the habitat before ticks are active, which makes the whole season easier to manage.