Tree Frogs in Maryland: identification guide and best places to start

Where are tree frogs most likely to be noticed in Maryland?

Tree frogs in Maryland are most often found in moist environments like the edges of ponds, marshes, and slow-moving streams. They also frequent wooded areas with plenty of leaf litter and shrubs. You are most likely to notice them clinging to vegetation or windows near lights at night. For a complete overview of tree frog habitats and behaviors, check out our tree frog identification guide.

In Maryland, tree frogs sightings usually improve when you slow down and match your first stop to where people are most likely to notice them. Use the state wildlife hub and the route guide to narrow your first area, then check access, weather, and distance before you settle in. A short walk with one clear viewing plan often beats covering too much ground, especially when habitat changes fast from open edges to brush, wetlands, timber, shoreline, or neighborhood cover.

What season or weather patterns help with spotting?

The best time to spot tree frogs in Maryland is from late March through early September. Warm, humid evenings after a rain are ideal because the frogs become active and call loudly. The gray tree frog calls on warm nights from April to August, while spring peepers are heard earliest in the spring. Our Maryland wildlife hub has seasonal tips for other species too.

Simple ID cues that separate them from lookalikes

Maryland's tree frogs include the gray tree frog (which can change color from gray to green) and the smaller spring peeper (with a dark X on its back). The northern cricket frog is a common lookalike but has warty skin and shorter legs. Listen for the gray tree frog's trill and the peeper's high-pitched whistle. To distinguish them, note that gray tree frogs have large toe pads and a light spot under each eye, while spring peepers are less than 1.5 inches long.

See our state animal guide for the next step.

Top Maryland Wetlands for Tree Frog Spotting

Some of the best spots for tree frog watching include the wetlands of Patuxent Research Refuge, the marshes of Eastern Neck National Wildlife Refuge, and the wooded ponds of Catoctin Mountain Park. For a guided experience, use this travel widget to find local frog-watching opportunities:

How to attract tree frogs to your backyard garden?

To bring tree frogs closer to home, install a small pond or water feature with native plants like cattails and pickerelweed. Avoid using pesticides and leave some leaf litter for cover. A simple dish of water placed near shrubs can also attract them. If you enjoy having them around, grab a tree frog t-shirt to celebrate your backyard visitors.