What Grass Is This?

Snap one healthy patch to identify your grass, then get a weekly lawn plan timed to your weather, soil temperature, and yard. Free to start, with no ads.

Brown spots, weeds, or mystery grass?

Take a photo before you buy another bag of fertilizer. What Grass Is This? identifies your grass, checks problem photos for likely causes, and gives you a practical next step for your actual yard.

Most lawn apps ask you to know your grass type first. We don't. Start with a scan, then get a plan built around your grass, ZIP code, lawn size, sun exposure, soil temperature, and local weather.

STOP GUESSING YOUR GRASS

Snap one photo. Get AI grass ID for the 10 most common U.S. lawn grasses, plus follow-up questions when the photo is unclear. Bermuda or zoysia? Tall fescue or rye? Start with the answer.

CHECK BROWN SPOTS AND WEEDS

Not sure if it is disease, drought, weeds, or mowing stress? Photograph the problem area and get likely causes, plain-language guidance, and a practical next step. When a problem needs local expertise, we point you to your extension office.

KNOW WHAT TO DO THIS WEEK

Your plan turns grass type, ZIP code, lawn size, and sun exposure into a weekly lawn care schedule. See the next task, why it matters, and what is coming later in the season.

TIME KEY TASKS BY SOIL TEMP AND WEATHER

Pre-emergent, overseeding, first mow, dormancy, watering, and fertilizer all have timing windows. Soil-temperature and local weather cues help you act closer to the right window.

STOP BUYING THE WRONG BAG

Measure your lawn, calculate fertilizer, read soil-test PDFs, and use saved lawn details across calculators. Less math in the store. Fewer wasted products in the garage.

TRACK WHAT WORKED

Log photos, mowing, watering, treatments, and notes. Build a lawn journal you can compare week to week and season to season.

FREE TO START

Start with grass ID, lawn setup, calculators, and your first plan. Premium adds unlimited scans, the full season-ahead plan, weather-aware alerts, diagnosis history, lawn health tracking, and more.

NO ADS. NO FERTILIZER PUSH.

Subscription-funded, not built around selling you one fertilizer brand. Privacy-conscious analytics and crash reporting. Your lawn photos and journal stay private in your account.

SUBSCRIPTION TERMS

Premium is $7.99/month or $47.99/year (save 50%), starting with a 14-day free trial. Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your device Settings. Terms of Use: https://whatgrassisthis.com/terms. Privacy Policy: https://whatgrassisthis.com/privacy

Your lawn, figured out. Start with a photo.