Indoor Herb Lighting: Shop Lights vs. Grow Lights

You don't need expensive "grow lights." A 2-bulb shop fixture with one cool-white (6500K) and one warm-white (3000K) fluorescent tube replicates full spectrum for <$30.

Setup Essentials

• Height: 3 inches above seedlings—adjust daily.
• Duration: 14–16 hours/day. Use timer.
• Reflector: Foil or white board behind doubles intensity.
• Airflow: Small fan prevents damping-off, strengthens stems.

LED Alternative

Full-spectrum LED panels (4000K, 90+ CRI) use 40% less power, last 50,000 hours. Cost-effective for >4 trays.

Seedling Schedule

1. Sow in cells, cover with dome.
2. Light on immediately at emergence.
3. Remove dome; bottom-water.
4. Fertilize at 2 true leaves (quarter-strength).
5. Harden off 7–10 days before transplant.

Herb-Specific Notes

• Basil, cilantro: Warmth lovers (70°F+).
• Parsley, chives: Cool tolerant (60°F).
• Rosemary, thyme: Need max light, lean soil.
• Mint: Invasive—always separate pot.

Resource

University of Missouri Extension Guide G6570: "Starting Plants from Seeds" (free online).