Harvesting Annual Seeds: Coleus, Impatiens & the Hybrid Trap

Saving hundreds on annuals by harvesting seeds? Possible, but know the hybrid trap.

Basic Method

1. Wait until flowers are completely spent—don't deadhead these
2. Seed pods form → dry on plant
3. Collect pods, dry several days in warm spot
4. Store in sealed plastic → sealed container → refrigerator (3-month dormancy)

Timing

• Impatiens: Sow 12 weeks before last frost
• Coleus: Sow 6 weeks before last frost

The Hybrid Reality

• Most nursery annuals = F1 hybrids (bred for color, disease resistance, uniformity)
• Hybrid seeds = genetic lottery—offspring rarely resemble parents
• Heirloom/open-pollinated = come true from seed
• Hybrid seed production = leave to professional breeders

Practical Advice

Save seeds as experiment. For reliable, uniform beds, buy fresh hybrid seed. The cost difference is the price of predictability.