Seedling Success: From Sowing to Potting Up Without the Stress

Seedlings are delicate, but the process doesn't have to be. Master sowing, pricking out, and potting on for strong, transplant-ready plants.

Sowing Smart: Modules > Mass

Sow 1–2 seeds per cell (root trainer/plug tray). Each seed gets private space — no root disturbance until transplant. Ideal for expensive/tricky seeds. Thin to strongest if both germinate.

Pricking Out: The Traditional Method

When seedlings have 1–2 true leaves:
1. Water tray — moist compost separates easily.
2. Prep modules/pots with fine seed compost (John Innes No.1).
3. Invert tray, catch seedlings on splayed fingers.
4. Gently tease apart — handle by LEAF only, never stem.
5. Dibber hole → lower roots → firm → water with tepid water.
6. Warm, bright, steady moisture.

Potting On: Graduating to Larger Quarters

When roots fill module (white tips at holes):
• Move to 3–4" pots with potting mix.
• Bury stem slightly (tomatoes, brassicas).
• Harden off before garden planting.

Keys to Vigor

• Light: 14–16 hrs/day (LED/T5) immediately after germination.
• Air movement: brush or fan 1 hr/day — prevents damping off, strengthens stems.
• Fertilize: weekly ½ strength liquid feed after true leaves.
• Label: variety + date. Memory fails.

Timing the Garden Move

After last frost, harden 7–10 days. Transplant on cloudy day or evening. Water in. Mulch. The seedling phase is brief—excellence here pays all season.