ROOTED IN REAL DATA Historical data. Thoughtful planning. No weather guarantees.
Seasonplot Find my window
✦ A little planning. A lot of possibility.

Good gardens
start with
good timing.

Know your climate. Understand your crop.
A clearer growing season, rooted in real data.

Find my climate reference Explore vegetables
Nationwide climate lookup Source-backed guidance
LESS GUESSWORKMORE GROWING
Windows, not deadlinesPlan with room for real weather
Climate data, made usefulHistorical NOAA freeze normals
Know the reasoningSources and caveats, always visible
A clearer starting point

Your place. The real source.

32,363 Census places · 7,285 NOAA agricultural references · 48 crop guides

Find your local climate reference

Choose a state, then search its cities, towns and Census-designated places.

Choose a state to search the national Census place inventory.

    Census places are not ZIP codes. A nearby station is a reference, not a garden-level measurement. Distance and data limitations are shown before any calculation.

    A place to put down roots

    Different cities.
    Different climate references.

    See the geographic connection before trusting a date.

    Search all 32,363 places
    Georgia

    Atlanta

    NEAREST REFERENCE5.8 miles
    SOURCE GEOGRAPHYCensus 2026
    Texas

    Austin

    NEAREST REFERENCE1.6 miles
    SOURCE GEOGRAPHYCensus 2026
    Massachusetts

    Boston

    NEAREST REFERENCE1.9 miles
    SOURCE GEOGRAPHYCensus 2026
    Illinois

    Chicago

    NEAREST REFERENCE4.1 miles
    SOURCE GEOGRAPHYCensus 2026
    Colorado

    Denver

    NEAREST REFERENCE0.6 miles
    SOURCE GEOGRAPHYCensus 2026
    Minnesota

    Minneapolis

    NEAREST REFERENCE1.5 miles
    SOURCE GEOGRAPHYCensus 2026

    Actual source connections · 32°F threshold · 1991–2020 NOAA normals · Not a garden-level forecast

    Meet your next harvest

    What’s on your growing list?

    Regional evidence, maturity methods and soil-temperature references.

    All vegetable guides

    Radish

    Direct sow

    A quick root crop with varieties for different harvest sizes.

    Explore the crop evidence

    Spinach

    Direct sow

    A leafy crop whose timing depends strongly on cool conditions.

    Explore the crop evidence

    Leaf lettuce

    Direct sow

    Loose-leaf salad greens for repeated small harvests.

    Explore the crop evidence

    Peas

    Direct sow

    Cool-season peas for shelling or edible pods.

    Explore the crop evidence
    A harvest target, with the maths in view

    Work backwards.
    Plan with context.

    Choose your intended harvest date and variety’s maturity.
    Explore a fall start-by scenario without inventing local suitability.

    Planning estimate
    not a planting recommendation

    Use the starting method shown by the source and your seed packet. Nursery time may be additional.

    A harvest date is your input, not an automatic freeze deadline. Find a climate reference and regional guidance before deciding whether the scenario fits your garden.

    ILLUSTRATIVE START-BY DATE · SOWING
    Choose a harvest date

    The calculator does not pick a weather-based deadline for you.

    Your harvest target—
    Variety’s days to first harvest—
    Slower fall-growth allowance+14 days
    Total time to allow—

    This count-back method is a regional rule of thumb, not validated planting advice for every climate or cultivar.

    Read the method’s source

    Maryland Extension’s rule adds 14 days to maturity to allow for slower fall growth. Maturity ranges come from the cited regional sources. The calculation does not establish whether a crop is viable now: consider local advice, daylight, heat, soil, cold tolerance and your variety. Some crops can continue after freezing; some need warmer conditions long before a freeze. Explore regional calendars · Find a climate reference

    A guide you can question

    Your garden is local.
    Your data should be, too.

    A national planting chart can only tell you so much. We connect historical station data and documented regional crop guidance while keeping the limitations of each source visible.

    See exactly how it works
    01

    Find your climate baseline

    Search the full Census inventory. See the nearest station, its distance, annual freeze occurrence and conditional date probabilities.

    02

    Choose what you want to grow

    Compare regional calendars and crop maturity sources. Keep their starting methods and geographic scope in view.

    03

    Bring your own garden into the picture

    Check local forecasts, soil warmth, elevation and microclimates before you plant.

    Make room for a good season.

    A clear starting point is a lovely thing to grow from.

    Plan my garden