d9961a76ad
Fixes duplicate placeholder cover image on the 3 newest blog posts, broken aspect-ratio classes on the albums listing page, and a non-responsive fixed sidebar on the chat page.
14 lines
579 B
Markdown
14 lines
579 B
Markdown
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title: "VPD Explained for Complete Beginners"
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date: 2024-03-20T10:00:00Z
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image: "/images/IMG_9449.jpeg"
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summary: "Temperature and humidity are connected. Learn how to hit the sweet spot."
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---
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VPD stands for Vapor Pressure Deficit. Think of it as the air's drying power.
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If the air is too dry (high VPD), plants sweat too much and slam their stomata to save water. Growth stops.
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If the air is too humid (low VPD), they barely sweat. No water movement means no calcium uptake.
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You want the Goldilocks zone. For early veg, aim around 0.8 kPa. For flower, push 1.2–1.4 kPa.
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