The calculators and information on The Plant Calculator are for general planning only.
- Estimates, not guarantees. Plant yields, germination, spacing needs and harvest periods vary with variety, climate, soil, weather and care. Treat every result as a starting point.
- Local conditions. Planting dates and seasons depend on where you live. Check local frost dates and regional growing advice.
- Structural safety. We never calculate structural capacity. Check that balconies, walls, railings and window ledges can safely carry planters, especially when wet.
- Food safety. Any figures about harvests are not food-preservation advice. Follow tested, official guidance for canning, freezing or drying.
- Product information. Tray, bag and edging sizes vary by manufacturer. Measure your own products where it matters.