Free Gardening Tools for Real Gardeners
GardenCalc was built by a designer and gardener based in Texas — because planning a great garden shouldn't require a horticulture degree.
Built for Gardeners, by a Gardener
GardenCalc is a free gardening tools site built by a designer and gardener based in Texas. It started as a personal project to make accurate planting information easier to find — no fluff, no accounts, just useful calculators for real gardeners.
Currently covering Texas, New Mexico, and Oregon with more states coming soon.
Explore All Tools →GardenCalc at a Glance
Our Values
The principles that guide every tool we build and every article we write.
Always Free
Great gardening knowledge should be accessible to everyone regardless of budget. Our core tools will always be free.
Accuracy First
We source data from NOAA, USDA, and university extension programs. We update calculations when science evolves.
Sustainability
We promote organic practices, companion planting, and soil health because a healthy garden starts with healthy soil.
Accessibility
Every page is mobile-responsive, screen-reader friendly, and optimized so it loads fast even on slow connections.
Community-Driven
Our best features come from gardener feedback. We read every email and implement suggestions that help the most people.
Privacy Respected
We don't sell your data. ZIP codes entered in our tools are never stored or associated with any personal information.
Share Your Feedback
GardenCalc is actively being improved based on gardener feedback. If you have suggestions, found a bug, or want to see a new feature — I'd love to hear from you.
Open Feedback FormFeedback is reviewed regularly and helps shape what gets built next.