Datura seeds last up to 5 years if stored cool and dry. Your 2009 seeds should be fine for 2011. (Exceptions: corn, peppers, parsley lose viability faster.)
Fruit Trees from Store-Bought Seeds: Hybrid Reality Check
Growing Pear Trees and Magnolias from Seed: Stratification Tips
Growing Quince from Grocery Store Fruit Seeds: Expect Variable Results
Indoor Seed Starting: Watering Mistakes and Tricks for Difficult Seeds
Growing Citrus and Pomegranate from Grocery Store Seeds: Realities and Methods
Hibiscus Seedlings Leggy and Curling – Lower Temperature
Multi-Fruit Tree Seed Propagation: Universal Cold Stratification Protocol
Understanding Apple Seedling Variability from Compost Volunteers
Can You Grow Peach Trees from Immature Peach Seeds?
Collecting and Stratifying Tulip Seeds for Hybridizing
Growing Cedar Trees from Seed: Cold Stratification and Seedling Care
Growing Fountain Grass from Seed: Managing Hybrid Variability
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