What is the difference between Heirloom, Open Pollinated, Hybrid, and GMO Seeds?

Understanding the Terms

• Heirloom – A type of open-pollinated seed that has been passed down for 50+ years, valued for its history, flavor, and reliability.
  • All heirlooms are open-pollinated, but not all open-pollinated varieties are old enough to be considered heirloom.
• Open-Pollinated (OP) – Naturally pollinated by wind, insects, or other natural means. Seeds from OP plants will grow true-to-type if not cross-pollinated.
• Hybrid (F1) – Created by crossing two parent plants for specific traits; seeds won’t grow true-to-type. We do not sell hybrids.
• GMO – Lab-modified seeds. We do not sell GMOs.

Benefits of Heirloom & Open-Pollinated Non-GMO Seeds

• Save Seeds – Replant year after year for a self-sustaining garden.
• Better Flavor & Nutrition – Many heirlooms are prized for taste and nutrient content.
• Local Adaptation – Often better suited to specific climates and pest conditions.
• Preserve Biodiversity – Protect plant varieties from being lost.
• Peace of Mind – All seeds are natural, open-pollinated, Non-GMO, and free from hybridization.

Why Buy From Us?

When you choose St. Clare Heirloom Seeds, you’re planting more than a garden—you’re preserving history. Our seeds are carefully selected for purity, flavor, and reliability, ensuring a natural, productive garden you can maintain for generations.

For more, Read our article Know Your Garden Seeds: Heirloom, Open-Pollinated, Hybrid, and GMO’s Explained!