How can we help?

From the national weather services. For every station Maythorn takes 30 years of daily minimum temperatures and computes the median last spring frost, the date nine years in ten are past their last frost, the first week of nights above 8 °C, and the median first autumn frost. Settings has a “Station data sources” screen listing every network and its licence.

Because that is the honest answer. Interpolating between stations was tested against real station records and missed by more than a fortnight along the coast, so Maythorn shows the station it used and how far away it is, and lets you pick another one. A number you can check beats a number that looks precise.

It is the cautious planting date. In the 30-year record, nine springs out of ten had seen their last frost by that day; the median is the typical year. Plant the tough crops on the median, and save the nine-in-ten date for the plants you cannot afford to lose.

Then its daily records are not openly licensed for this yet, and the app says so rather than estimating. Italy and Mexico are in that position today. Everything else still works, and logging your own frost nights gives you a measured record of your own plot, which is better than any station once you have a few seasons in it.

Check the distance on the card first: a station 40 km inland from a coastal garden really does freeze later. If you know a nearer station, pick it in garden setup. If you think the station itself is off, email us with the station name and what you observe.

Yes. Log a frost night in the journal and Maythorn builds your garden’s own measured frost record: the latest spring frost and the first autumn frost of every season you log. That works in every country, including the ones without station data, and after a few seasons it is better evidence for your plot than any station.

Sowed, potted on, planted out, harvested, frost nights and plain notes, each with a date, against a bed or a single plant. Perennials and fruit trees are tracked across years rather than reset each season.

The crops whose window is open right now at your station. Each crop’s window is computed from your own station’s frost dates and warm nights, so two gardens in different regions see different lists on the same day.

Yes. Any crop can be added and tracked in full without a library entry. The built-in library covers the common kitchen-garden crops, but nothing is locked to it and no seed shop is involved.

They live beside the annual beds and carry their history across years instead of resetting each season: planting, pruning notes, harvests. Multi-year plants are part of the one-time purchase.

Free: one garden, full frost guidance, and reading and export of every saved season. Pro: unlimited gardens, perennials and fruit trees, and your seasons side by side. Your own last-frost median from at least three logged spring seasons.

Maythorn is a one-time purchase at €19.99: you pay once, and there is no subscription and nothing that renews.

Pro: unlimited gardens, perennials and fruit trees, and your seasons side by side. Your own last-frost median from at least three logged spring seasons.

Free: one garden, full frost guidance, and reading and export of every saved season.

Open the paywall and choose Restore Purchases; that re-reads your App Store account. If it still does not unlock, email us from the address tied to that account.

On Apple devices, yes: Family Sharing is on, so family members in the same Family Sharing group can use it without buying again. Google Play does not share in-app purchases through Family Library, so on Android the unlock belongs to the Google account that bought it.