![]() ![]() Grow lights without lenses/optics really don't make much sense here. This is because of the higher light intensity these plants need. You'll notice that the distances in this second chart are overall much closer. Grow Light Placement For Fruiting & Flowering PlantsĪnd here's the same chart for Fruiting & Flowering plants like peppers & tomatoes Or if you were using something more powerful like the Vita Grow Light (which also has optics) then 8.5 - 11" is going to be more appropriate.If you have a ~10W grow light with a lens (like our compact grow light ) then you'd want it 7-9" from the foliage.The chart below summarizes typical grow light placement for various types of E26 screw in grow lights. Grow Light Placement For Lettuce and Leafy Greens Mature plants (adults) need more energy, therefore distances will generally need to be shorter such that the light is more intense. Seedlings (like babies) need very little light (energy) therefore greater distance are generally ok. How Plant Maturity Stage Impacts Grow Light Placement The diagrams below will help make this point a bit clearer. All else equal, a grow light with optics can be placed further away. You'll notice that some grow lights just have 'naked' or exposed LED chips, which are basically throwing light in all directions, while others emit a much more concentrated array of light - this is usually achieved with some sort of light-concentrated lens, or optics. How Beam Width Impacts Grow Light Placement This is irrelevant for plants, and we recommend ignoring it. Note that some manufacturers attempt to mislead consumers by quoting an "effective" wattage. All else equal, higher wattage globes will be placed further from the plant and low wattage globes need to be placed closer. Generally speaking, more watts (energy consumed) translates to more plant available light energy. ![]() All else equal, this means decorative plants are ok with grow lights being placed further away. Lettuce, herbs and leafy greens need at least 4-5x more light, and flowering plants like peppers and tomatoes require more still! (DLI's of 20-30 umol/m2/day are typical). How Plant Type Impacts The Correct Distance For Your Grow Lightĭecorative indoor plants (eg Monstera, Snake Plant) have very low requirements and can survive on less than DLI of less than 4 umol/m2/day. The goal of this blog is to help you understand the main factors that determine optimal grow light placement, so that your indoor garden can thrive. Getting the placement of your grow light correct is super important for delivering the right amount of light to your indoor garden, and having happy indoor plants.ĭepending on the type of light, and the plant you're growing, appropriate distances from plant to light can range from as little as 2 inches, up to 2 feet or more. How Far Should Your Grow Light Be From Plants? ![]()
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