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Drop a Chart!
Mooncatstarted grow question 6 months ago
Got myself a Juicy Infrared reading thingy for the leaves.
Anyone a useful VPD Chart? Seems to be quite a bunch out there...
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Leaves. Other
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AutoflowersSucKanswered grow question 6 months ago
VPD, thats important stuff. It's the ratio between the air humidity and the humidity pressure within the leaf tissue. It affects the rates at which the plants breathe and take in water and nutrients.
I aim for specific VPD's when i am at the various stages of growth.
Veg VPD = 0.85 to 0.95
Flower VPD = 1.20 to 1.50
Veg likes low VPD, so that means they like relatively high humidity with upper moderate temps
Flower likes a little higher VPD. Temps around 75F and 45% to 55% RH
Angus_MacGroweranswered grow question 6 months ago
I use this one: https://hightimes.com/grow/understanding-vapor-pressure-deficit/
But there is no study about VPD on cannabis yet, so take any chart you want as a general indication.
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Stickyoneanswered grow question 6 months ago
Nice, you've got yourself a VPD chart! VPD, or vapor pressure deficit, is crucial for understanding plant transpiration and overall health. There are indeed various charts out there, and they might differ a bit based on the specific needs of different plants. Generally, though, the aim is to maintain an optimal VPD range for your particular crop.
What kind of plants are you monitoring? Different plants can have slightly different preferences when it comes to VPD.
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CannaIGrowanswered grow question 6 months ago
https://www.perfectgrower.com/knowledge/knowledge-base/vpd-chart-vapor-pressure-deficit/
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