Tree Frogs in New Jersey: identification guide and best places to start
Yes, tree frogs are common in New Jersey, especially the gray tree frog and spring peeper. You'll most likely hear them calling from wetlands and wooded backyards on warm spring and summer nights. Start by listening for their distinctive songs after rain showers. This guide covers species, habitat, and timing to help you spot them.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Gray Treefrog · Public domain CC0
Gray Treefrog · Kristof Zyskowski CC BY
Gray Treefrog · Public domain CC0
- 8
- species recorded
- 5,893
- GBIF records
- May, March, June
- peak months
Yes, tree frogs are in New Jersey. Next you'll want:
Verified species, source iNaturalist
7 types of tree frogs recorded in New Jersey
7 tree frog species have a verified observation record in New Jersey, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
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Plus 2 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations. Photos by iNaturalist observers, reused under the licence each observer chose.
Real sighting data, source iNaturalist
4,848 verified observations on iNaturalist of tree frog have been recorded in New Jersey, most often in May, March, June.
When tree frog are recorded in New Jersey
Yes, tree frogs are common in New Jersey, especially the gray tree frog and spring peeper. You'll most likely hear them calling from wetlands and wooded backyards on warm spring and summer nights. Start by listening for their distinctive songs after rain showers. This guide covers species, habitat, and timing to help you spot them.
What tree frog species are found in New Jersey?
New Jersey hosts several tree frog species. The most widespread is the gray tree frog (*Hyla versicolor*), known for its ability to change color. The spring peeper (*Pseudacris crucifer*) is tiny but vocal, often the first to call in early spring. The pine barrens tree frog (*Hyla andersonii*) is a rare gem found only in the southern part of the state. For a deeper look at each species, check out ourcomplete guide to tree frogs.
Where are the best places to spot tree frogs?
Your best odds are near freshwater wetlands, ponds, and slow-moving streams. In the Pine Barrens, the pine barrens tree frog favors shallow, acidic waters. The Great Swamp National Wildlife Refuge and Wharton State Forest are excellent starting points. Even suburban backyards with a small pond or damp area can attract tree frogs. For more New Jersey wildlife spots, visit ourNew Jersey wildlife page.
When is the best time to see tree frogs?
Spring and summer are prime seasons. Spring peepers start calling as early as March on warm, rainy nights. Gray tree frogs become active from April through September. The best time of day is just after sunset, especially following a light rain when humidity is high. Overcast evenings often yield the most activity. If you're planning a trip, aim for late April through June for the widest variety of calls.
See ourstate animal guidefor the next step.
How can you identify New Jersey's tree frogs?
Focus on size, toe pads, and color patterns. Gray tree frogs are 1.5 to 2 inches long with large toe pads and often a dark X-shaped mark on their back. Spring peepers are smaller (under 1 inch) with an X on their back too, but a darker brown than the gray tree frog's gray or green. The pine barrens tree frog has bright green back with a purple stripe and yellow underside. For additional ID tips, see ourtree frog identification page.
What do tree frog calls tell you?
Each species has a unique call. Spring peepers produce a high-pitched, repeated 'peep' that carries far. Gray tree frogs give a short, musical trill lasting about half a second. The pine barrens tree frog's call is a nasal 'quonk' often repeated. Learning these calls helps you locate frogs without disturbing them. Many people find that listening first then approaching slowly works best.
Planning your tree frog outing
A simple flashlight with a red filter reduces disturbance to frogs. Wear rubber boots and insect repellent. Most importantly, move slowly and quietly near water edges. Here's a handy widget to check local weather and sighting conditions:
For more tips on exploring New Jersey's outdoors, browse ourNew Jersey wildlife resources.
Show your tree frog pride
After a successful outing, celebrate with some tree frog themed apparel. Here are a few favorites from our collection:
Amazon Rainforest Upper Orinoco Tree Frog Sweatshirt
A cozy sweatshirt featuring a vibrant tree frog design from the Amazon. Perfect for cooler evenings.Check Price and Availability
Tree Frog T-Shirt
A classic tee showing a green tree frog in its natural habitat. Comfortable and durable for outdoor wear.Check Price and Availability
Vintage Tree Frog T-Shirt
A retro style tree frog graphic that stands out. Lightweight and great for layering.Check Price and Availability
Browse our fullwildlife shirt collectionfor more designs.
What do people often ask about tree frogs in New Jersey?
**Are tree frogs poisonous?** No, New Jersey's tree frogs are not poisonous to humans, but they may have mild skin irritants. Avoid touching eyes after handling.
**Can I keep a tree frog as a pet?** It's not recommended for beginners and is illegal for some species like the pine barrens tree frog. Check local regulations.
**What do tree frogs eat?** They eat small insects like flies, moths, and crickets. This makes them beneficial for gardens.
**How long do tree frogs live?** Gray tree frogs can live 5-7 years in the wild, spring peepers about 3 years.
See ourtour planning ideasfor the next step.
Plan your trip
Best time to see tree frog in New Jersey: May, March, June
See the month-by-month sighting calendar.
Plan your tree frog sighting in New Jersey
5,893 verified tree frog records have been logged in New Jersey, most recently in 2026. See the GBIF records.
Where to look in New Jersey
- Appalachian National Scenic Trail · Wildlife Watching, Birdwatching · Find hotels
- Delaware Water Gap National Recreation Area · Wildlife Watching, Birdwatching · Find hotels
- Great Egg Harbor River · Wildlife Watching, Birdwatching · Find hotels
- Morristown National Historical Park · Wildlife Watching, Birdwatching · Find hotels
- Ellis Island Part of Statue of Liberty National Monument · Find hotels
- Gateway National Recreation Area · Find hotels
Frequently asked questions
What tree frog species live in New Jersey?+
New Jersey hosts several tree frog species. The most widespread is the gray tree frog (*Hyla versicolor*), known for its ability to change color. The spring peeper (*Pseudacris crucifer*) is tiny but vocal, often the first to call in early spring. The pine barrens tree frog (*Hyla andersonii*) is a rare gem found only in the southern part of the state. For a deeper look at each species, check out ourcomplete guide to tree frogs.
Where can you see tree frogs in New Jersey?+
New Jersey hosts several tree frog species. The most widespread is the gray tree frog (*Hyla versicolor*), known for its ability to change color. The spring peeper (*Pseudacris crucifer*) is tiny but vocal, often the first to call in early spring. The pine barrens tree frog (*Hyla andersonii*) is a rare gem found only in the southern part of the state. For a deeper look at each species, check out ourcomplete guide to tree frogs.
When is the best time to see tree frogs in New Jersey?+
New Jersey hosts several tree frog species. The most widespread is the gray tree frog (*Hyla versicolor*), known for its ability to change color. The spring peeper (*Pseudacris crucifer*) is tiny but vocal, often the first to call in early spring. The pine barrens tree frog (*Hyla andersonii*) is a rare gem found only in the southern part of the state. For a deeper look at each species, check out ourcomplete guide to tree frogs.
Keep exploring
More places to see tree frog