oilseed

Sunflower Calculators

An oilseed and confection crop grown for cooking oil, snack seeds, and birdseed. Use the free tools below to plan fertilizer rates, seeding rates, planting dates, yield estimates, and costs for your sunflower operation.

4 free calculators for sunflower across 4 categories

Fertilizer & Soil

Sunflower Fertilizer Calculator

Calculate exact NPK fertilizer rates for sunflower. Get nitrogen, phosphorus, and potassium recommendations based on yield goals and soil test results.

Seed & Planting

Sunflower Seeding Rate Calculator

Calculate seeding rate and seed needs for sunflower. Get population, spacing, and seed quantity recommendations.

Planting Date

Sunflower Planting Date Calculator

Calculate the optimal planting dates for sunflower based on your USDA zone, last frost date, and preferred start method.

Crop Yield & Harvest

Sunflower Yield Calculator

Calculate sunflower yield per acre. Estimate total harvest, yield potential, and compare to averages.

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