What "in season" means
The guide includes a fruit or vegetable when growers normally harvest it in the selected country during that month. It excludes imports and produce available only from long-term storage, heated greenhouses, or other protected methods.
The guide uses government sources, national horticultural organisations, and national produce boards where possible. If no detailed national source exists, it uses the overlap between two reputable regional sources. Weather, latitude, altitude, cultivar, and farming method can shift harvest dates by several weeks.
United Kingdom
- Royal Horticultural Society, Grow Your Own, including its fruit gardening calendar, vegetable crop planner, and harvesting guidance.
- Worcestershire County Council, How to eat seasonally.
Ireland
United States
Canada
When provincial calendars differ, the guide keeps only their overlapping fresh-harvest periods.
Australia
- Sydney Local Health District, Seasonal Fruit and Vegetable Guide.
- Brisbane City Council, Buying local, seasonal fruit and vegetables.
The guide keeps seasons shared by the temperate and subtropical sources.