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Grow light basics

Pick the right light output, schedule, and placement for indoor herbs and greens.

Quick rules

  • 14-16 hours of light for herbs
  • 6-12 inches above the canopy
  • Use a timer for consistency

Best for

Indoor herbs, leafy greens, and seedlings.

Simple setup

One bar light over a shelf or a clamp light over a tray.

Placement checklist

Even coverage

Center the light so every pot gets equal exposure.

Heat control

Keep lights high enough to avoid leaf burn.

Rotation

Rotate pots weekly to prevent leaning.

Choosing the right light

Small shelves

Use a slim bar light with adjustable height.

Countertop herbs

Use a compact panel light on a timer.

Seed starting

Choose higher output and keep the light close.

FAQs

Do I need purple lights?

No. Full-spectrum white LEDs are great for herbs and greens.

How far should the light be?

Start 8-12 inches above leaves, then adjust if plants stretch.

Can I leave lights on all day?

Most herbs do best with a dark period. Stick to 14-16 hours.

Next steps