Fertilizer / NPK Calculator

Estimate how much fertilizer to apply from its N–P–K label, your garden size, and your nitrogen target.

Soil pH Amendment Calculator

Get a rough lime or sulfur estimate based on the pH change, soil texture, and treatment area.

Watering Calculator

Estimate a watering interval from plant type, soil drainage, growing location, rain, and temperature.

Plant Symptom Checker

Select everything you see. The checker will compare the combination with common garden problems.

Nutrient Deficiency Checker

Leaf location and color pattern can help narrow the possibilities before a soil or tissue test.

Sun / Light Estimator

Classify a growing spot by direct sunlight, common obstructions, and its direction of exposure.

Brown / Green Ratio Calculator

Combine the estimated carbon-to-nitrogen values of your compost ingredients and aim for a 25–30:1 starting mix.

Common Weed Lookup

Search by name or a visible trait. Compare several features before choosing a management method.

Reference only. Identification from text can be uncertain; verify before using any herbicide.

Yield Estimator

Project a broad harvest range from plant count and expected vigor. Results are planning estimates, not guarantees.

Garden Savings Calculator

Compare annualized garden costs with the estimated store value of your harvest.