Guides
Garden guides
Short, practical guides that help you measure once, buy the right amount, and use the gardening calculators with better inputs.
Calculator guides
Use these guides when you want the plain-English method behind a calculator result.
How Much Soil for a 4x8 Raised Bed?
See how much soil a 4x8 raised bed needs at 6, 8, 10, 12, 18, and 24 inches deep, with bag estimates and a simple formula.
GuideHow Much Mulch Do I Need?
Calculate how much mulch you need by square feet and depth, with cubic yard examples for 1, 2, 3, and 4 inch mulch layers.
GuideBulk vs Bagged Mulch
Compare bulk vs bagged mulch by project size, cost, delivery, storage, and cleanup before buying.
GuideHow Much Grass Seed Do I Need?
Estimate grass seed by square footage, seed type, and whether you are starting a new lawn or overseeding.
GuideNew Lawn vs Overseeding
Learn when to use new lawn seed rates versus overseeding rates, with examples for common lawn repair situations.
GuideRain Barrel Size Guide
Choose a rain barrel size based on roof area, rainfall, garden use, overflow, and watering needs.
GuideHow Much Water Can You Collect From a Roof?
Estimate roof rainwater collection in gallons using roof area, rainfall, runoff efficiency, and a simple formula.
GuideDrip Irrigation Emitter Flow Rates
Understand common drip emitter flow rates, total gallons per hour, and how to estimate run time for garden beds.
GuideWhat Does NPK Mean?
Learn what NPK means, how to read fertilizer numbers, and how to calculate actual nutrients in a bag.
GuideGreens and Browns Compost Ratio
Balance greens and browns in compost with simple ratios, examples, and fixes for wet, smelly, or slow piles.
Related calculators
| Planning task | Calculator | Use it for |
|---|---|---|
| Raised beds | Raised Bed Soil Calculator | Soil volume, cubic feet, cubic yards, and bags |
| Mulch | Mulch Calculator | Mulch depth, cubic yards, bags, and cost |
| Lawn seed | Lawn Seed Calculator | Seed amount for new lawns, overseeding, and patches |
| Rainwater | Rainwater Collection Calculator | Gallons collected from roof area and rainfall |
| Drip irrigation | Drip Irrigation Flow Calculator | Total emitter flow in gallons per hour |
| Fertilizer | Fertilizer NPK Calculator | Actual NPK nutrients from a fertilizer label |
| Compost | Compost Ratio Calculator | Greens and browns balance for home compost |