Starting Bell Peppers from Seed: Prep, Timing & Seed Saving

Bell peppers germinate slowly (14–21 days) and need warmth. Skip the nicking and soaking—just sow indoors 6 weeks before your last frost.

Seed Preparation: Keep It Simple

Unlike large seeds (sunflowers, beans), pepper seeds don’t benefit from scarification or soaking. Use fresh, high-quality seed from a reputable supplier. Sow ¼ inch deep in sterile seed-starting mix; maintain 75–85 °F soil temperature with a heat mat.

Buy or Save? Buy.

• Hybrid dominance: Most commercial pepper seed is F₁ hybrid. Saved seed segregates—offspring won’t match the parent’s size, color, or disease resistance.
• Cost & reliability: A packet costs $3–4 and carries tested germination rates.
• Exception: Only save seed from open-pollinated/heirloom varieties (e.g., ‘California Wonder’ OP, ‘King of the North’).

Timeline for Colorado (Zone 5–6)

1. Mid-March: Sow indoors under lights (14 hrs/day).
2. Early May: Harden off.
3. Late May (after frost): Transplant to garden, spacing 18″ apart.

Pro Tip

Peppers thrive when transplanted deeper each time they’re potted up—roots form along the buried stem, creating a sturdier plant.