This application is a complete, single-file Square Foot Gardening planner. It requires no backend, uses in-memory state management, and is fully responsive. ```html Free Square Foot Gardening Spacing & Yield Estimator

Garden Planner

Square Foot Gardening Spacing & Yield Estimator

Select Plant

Summary

Total Plants: 0
Estimated Yield: 0 lbs

Estimations based on avg yield per plant. Click grid cells to toggle plants.