Garden tools
Practical tools and official references to help you plan beds and planting times.
Raised bed soil calculator
Estimate cubic feet, cubic yards, liters and bag counts for rectangular or round beds, with an optional settling allowance.
Official planning references
These free public resources are run by government agencies and universities. Raised Bed Atlas is not affiliated with them.
- USDA Plant Hardiness Zone Map: look up your zone by ZIP code (for perennial survival, not planting dates). Background: hardiness zones explained.
- Find your state Cooperative Extension office: local planting calendars, frost dates and soil testing labs.
- NOAA U.S. Climate Normals: the 30-year climate data behind many frost-date estimates.