About GardenPlanKit

GardenPlanKit helps home vegetable gardeners make a measured plan before ordering soil, choosing containers or placing plants. Our free tools turn your own dimensions into quantities you can check, save and print.

What you can do here

Calculate soil and mulch volumes, compare your own supplier quotes, estimate pot capacity and count a geometric planting grid. The guides connect these calculations to the decisions behind them: growing system, drainage, access, plant support and material choice.

This tool lets you supply a local last spring frost date, edit regional crop timing references, and run all calculations and CSV/ICS exports in your browser without a weather feed or location lookup. Journal entries stay in this browser's localStorage, with local JSON imports, full JSON exports, and filtered CSV exports of shown entries. Calendar-to-journal links prefill an unsaved planned activity from URL fragment values that you must save.

What stands behind a page

Our examples use transparent geometry and explicitly named units. Horticultural statements are tied to primary university extension sources and keep their regional and growing-system context. We do not present a geometric fit as a yield prediction.

GardenPlanKit is an independently operated planning website. It is not a university extension service, a nursery or a substitute for local growing advice. We do not claim that our editorial team has field-tested every method or product.

How the content is prepared

We use a locally hosted AI model to assist drafting and refreshing pages. Structured source notes, numerical checks and publication checks support the process. Model review can miss mistakes, so each page links to its sources and explains its assumptions. Read our editorial policy.

Help us improve a plan

If a calculation or source reference needs correction, send the page address, the inputs you used and the result you expected through our contact form.