Free grass identifier

Upload one photo of your lawn, a weed or a problem patch and see what it is. One free scan a day, no sign-up.

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Your state or regionSun or shadeWhen the problem startedHow short you mowHow often you water

Before you upload: the free identifier runs one scan per visitor every 24 hours and doesn't work over a VPN, proxy, Tor or Private Relay. Turn those off first and use a sharp, well-lit photo so the scan isn't wasted.

What one photo can tell you

A close, sharp photo is usually enough to tell cool-season from warm-season grass and to name common lawn grasses such as Bermudagrass, St. Augustinegrass or tall fescue. Mixed lawns and fine grasses are harder, so the result names the closest candidates and the detail that separates them.

  1. 01

    Take one close photo

    Get down to grass level in daylight. Single blades, the tips and how the grass spreads matter more than a wide view of the yard.

  2. 02

    Compare the look-alikes

    Hold a shoot next to the result. The blade tip, the width and whether it has runners usually settle it.

  3. 03

    Check before you treat

    Before you spray anything, confirm the weed or disease and read the product label. Your local extension office can test a sample.

What to photograph for each kind of scan

The identifier reads what the camera sees, so the right framing matters more than the camera. Pick the case that matches your question and shoot it this way.

  • Your grass type

    Kneel down and photograph a few blades from about a hand's length away, with the tips in focus. If you can, add a second photo of a pulled shoot on a sheet of paper.

  • A weed

    Photograph the weed on its own, filling most of the frame. Include several leaves and any flower or seed head, since those separate look-alikes such as clover and black medic.

  • A brown or bare patch

    Stand back far enough to show the whole patch and the healthy grass around its edge. The shape of the edge, sharp or fading, is one of the best clues to the cause.

  • Spots, rings or a white coating

    Get close to a few affected blades to show the lesions or mold, then take a wider shot of the area. Early morning, while the lawn is still damp, shows fungus best.

How to confirm the result in your yard

A photo narrows it down. These three checks take a few minutes with a trowel and usually settle which grass you have.

  1. 01

    Dig up a small plug

    Lift a palm-sized piece with the roots. Runners on top of the soil point to Bermuda, St. Augustine, zoysia or centipede. Underground shoots point to Kentucky bluegrass. Tight clumps point to ryegrass or tall fescue.

  2. 02

    Look at the blade tip

    A boat-shaped tip that splits when you press it means Kentucky bluegrass. A blunt, rounded tip means St. Augustine. Most other grasses taper to a point.

  3. 03

    Check the collar

    Peel one leaf back from the stem. A fringe of tiny hairs where the leaf meets the stem is typical of warm-season grasses. Small claw-like flaps point to ryegrass.

Common questions

Keep learning about your lawn