Predict germination time based on seed type, temperature, and environmental factors using USDA, UC Davis, and university research data.
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user contributions
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20°C
Optimal: 15-29°C
22°C
Daytime average
0 mo
0 = fresh seeds, >12 = older seeds
Germination Prediction
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Select seed type and conditions to calculate germination
📅 Germination Days
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📊 Success Rate
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⚠️ Risk Level
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🔬 Scientific Data & Sources
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Data Sources
•USDA Plant Hardiness Zone Database
•University of California Davis Seed Biology
•International Seed Testing Association
•Royal Horticultural Society Guides
Models Used
•Thermal Time Model (TTM)
•Cardinal Temperature Model
•Hydrotime Model for moisture
•Seed viability degradation
📚 This calculator provides research-based estimates for educational purposes.