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Data & methodology

Published planting recommendations, with their original scope and precision.

This pilot displays 194 place–crop mappings. Its source registry contains 4 reviewed publications. A mapping is not a separate local study: national references can appear for several towns without establishing local suitability. Search coverage is broader than recommendation coverage. A missing recommendation means we have not verified a publication for that place and crop.

How dates reach the calendar

  1. Review the original publication or official API, including its table headings and conditions.
  2. Record the publisher, edition, retrieval date, source location and a SHA-256 fingerprint of the retrieved file.
  3. Map only explicitly reviewed places to the publication's geographic scope.
  4. Display the published action and date label. Months stay months; chart boundaries are display coordinates, not more precise recommendations.

“Published recommendation” identifies the evidence type, not the probability of success. Regional and national advice is not a city-specific forecast. Source age and local conditions still matter.

We do not calculate planting dates from frost offsets, rainfall, ECOCROP suitability or maturity durations. Harvest periods appear only when explicitly published; they are not predictions for an individual sowing date. Earlier computed calendars and frost estimates are withheld from public advice pending review.

Reviewed publications

FAO Crop Calendar: Egypt, Delta region

Food and Agriculture Organization of the United Nations · Records updated 26 February 2021; retrieved September 2026 · checked 2026-09-13 · next review due 2027-09-13

Selected numeric periods from the official API, with attribution. No photos or descriptive source text reproduced. FAO database terms and third-party exceptions apply; no blanket license asserted.

Source fingerprint69d8c6815389133eea1587bf79ada8edfbf1b08296c664bce1ae7c4e49d3f303

Philippine Vegetable Industry Roadmap 2021–2025

Philippine Department of Agriculture · Copyright 2022; Table 36 adapted from DA-BPI, 2020 · checked 2026-09-13 · next review due 2027-09-13

Selected factual periods summarized in original wording. Publication text, images and layout are not reproduced; no open license is claimed. The publication reserves reproduction rights; permission is required for reproducing its original material.

Source fingerprintd29d197f153ec24c6fdebcef100504b59663f70c194adccd8e0cbcca951f2050

Florida Vegetable Gardening Guide

UF/IFAS Extension · SP 103; revised June 2025; web version 2.8.0 · checked 2026-09-13 · next review due 2027-03-13

Selected factual periods summarized in original wording. Publication text, images and layout are not reproduced; no open license is claimed.

Source fingerprinta0a43705607a7bfe99aca787b969900ceaadbcb541a18db9c29fcbab22a8ac5b

Vegetable Planting Calendar for Central Maryland

University of Maryland Extension · October 2021 · checked 2026-09-13 · next review due 2027-09-13

Selected factual periods summarized in original wording. Publication text, images and layout are not reproduced; no open license is claimed.

Source fingerprint7d07c18951fce5e8abbaa810a8f8cbf6478dfd9a237562bce2d625005afef2ee

Only selected factual periods are summarized here. Source texts, images and charts remain with their publishers; no blanket open license or publisher endorsement is claimed.

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