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 correct 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

For more info on VPD, check out our VPD guide that includes an overview of the importance of VPD and free digital versions of our chart & calculator: pulsegrow.com/vpd
 

SHIPS SEPARATELY FROM OTHER PRODUCTS
All credit card purchases will be charged by Pulse Grow.