Disclaimer
Our calendar and guides help you plan. They cannot see your garden or tomorrow's weather.
Last updated · Sources checked on
Averages, not forecasts
- Frost dates are statistics of 1991-2020 weather at a nearby station. In about half of years the last spring frost comes after the average date, and frost can occur in your garden when the station records none.
- Monthly temperature and rainfall figures are long-term averages, not a prediction for this year.
- SowClock shows no weather forecast. Before planting out tender plants, check your national weather service's forecast.
General timings
- Sowing and planting timings are general rules from university extension services, mostly in the United States. Local advice, your seed packet, your soil and the weather on the day may call for different dates.
- Days to harvest vary with variety, weather and care; harvest dates are rough estimates.
- If you type your own frost dates, the calendar is only as good as those dates.
Moon phases
Moon phases are shown as a gardening tradition, for those who like to follow it. We do not claim they affect plant growth: scientific evidence for that is lacking. (source: Illinois Extension)
Liability
We do our best to keep the data and timings accurate, test them against official references, and correct errors quickly when they are reported. To the extent permitted by law, we cannot be held liable for losses (including lost crops) resulting from decisions you take based on this site.
A friendly guide, not a guarantee. Frost dates are averages of past weather, not forecasts: a frost can come later than the average in any year. Crop timings are general rules from university extension services; your soil, microclimate, variety and the weather on the day matter too. Check your local forecast before planting out tender plants.
Sources
Sources checked on 1 November 2026.