Calculators & tools
Quick estimates for rainwater, solar and garden beds. Results are approximate.
Rainwater harvest
Solar sizing
Garden beds
How many plants? (spacing planner)
Spacings are converted to cm from the Beginner’s Garden QuickStart Guide; planting too close invites disease and competition.
Garden journal
Log what you plant and what happens (saved in this browser).
These are rough guides. Use a qualified electrician for solar installation.