Full Spectrum Grow Lights

Look for a continuous spectral distribution that mimics sunlight, with a high Color Rendering Index (CRI ≈ 95–100) and complete coverage across blue, green, red, and even some UV/IR wavelengths; packaging and CRI/CCT specs, independent certifications, and real-world “white light” appearance are good indicators.

A full spectrum LED grow light for indoor plants emits white light, not purple or blue-red “blurple”. It appears as natural daylight (CCT ≈ 5000–6500 K) because it includes balanced blue, green, and red wavelengths.

Placement depends on intensity: seedlings often need lights 8–12 inches above, while mature plants are typically hung 2–4 feet away to ensure optimal PPFD without light burn.

The ideal spectrum of full spectrum grow lights for seedlings to veg spans the full PAR range (400–700 nm), with balanced red and blue plus some green—and optionally far-red/UV—to support both yield and plant health; intensity (PPFD/DLI) is still the most important factor. Learn more about PPFD/DLI in our latest blog.

Yes! Many utility and government programs offer rebates that can cover 50–100% of the cost of qualifying LED grow lights (and even HVAC/dehumidifier upgrades), saving commercial growers thousands and relieving grid strain. Check your eligibility here!