They convert much of their electricity into heat rather than light, making them fairly inefficient as grow lights, particularly for indoor vegetable crops like tomatoes. Though not technically a grow light, incandescents are often labeled and used as one. There are four kinds of plant grow light lamps to choose from. Natural daylight has a high color temperature (about 6000 K). The best artificial light source for tomatoes imitates the light in their natural environment. They put off a reddish or even yellow glow. Grow lights with lower color temperatures (2500-3000K) are known to encourage flowering and are often used when the plant develops fruit. Grow lights with higher color temperatures (5000-6500K) provide the full light spectrum and promote all stages of vegetative growth. The light spectrum in grow lights is expressed in degrees Kelvin (K), a number that indicates a visual “temperature.” But never fear – here’s a short summary to help you understand tomato grow lights and make a good decision.ĭifferent grow lamp types emit light in different ways. This is the area that can be most confusing for indoor gardeners. View different grow light systems you can choose from. Assess and measure your dedicated growing area in order to choose the grow light stand or structure that will work best for you. What type of stand (structure) will be best for your situation? Decide how much room you want to dedicate to your tomato grow lights system.What type lamp will be best for what you want to grow? Determine your goals: will you start seeds indoors? Grow plants indoors? Grow plants in a greenhouse? (Find greenhouse plans here.) The type of indoor tomato gardening you want to do will guide which type of tomato grow lights you select. In choosing a tomato grow light system, consider two questions
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