A grow light may be positioned approximately 12–24 inches above many foliage houseplants, but the correct distance depends on fixture power, light distribution, crop type, growth stage, dimming level, and operating time.
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2026-07-31
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2025-12-25Grow light distance is not a single fixed number. The correct mounting height depends on the light’s intensity at canopy level, the plant growth stage, canopy density, and how well the system can control output.