Pulse Grow - VPD Chart / Poster

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Vapor pressure deficit (VPD) is extremely important for growing plants. This chart will help you ensure you grow is maintaining a great VPD level. VPD helps you identify the correc t range of temperature and humidity to aim for in your grow space. With VPD you can achieve the best results while avoiding pest and environmental problems. VPD also controls plant transpiration rates, stomata opening, CO2 uptake, nutrient uptake, and plant stress. 24" x 36" VPD poster/chart with glossy UV coating Chart assumes a -2° leaf surface temperature Ships separately, secured in a thick poster tube Show more