Veg Climate: VPD, PPFD, Temp, RH
The exact climate band that builds a vegetative plant — VPD 0.8-1.1, PPFD 300-600 ramping to 600-900, and the temps and RH that hold it.
7 min read
The veg climate band
Veg steering is vegetative by definition: you want bushy growth and canopy build, which means keeping the plant transpiring comfortably without stress. That translates to a defined climate box. Hit it and the plant runs; drift out of it and you either invite disease (too soft) or stall growth (too harsh).
The rest of this lesson is for members
Unlock every department, SOP, calculator, and setpoint table — plus Leaf, your AI consultant, and interactive diagnostics.
- All 11 departments
- Coco & rockwool tracks
- The full SOP library
- Leaf AI consultant
Unlock full access membership from $490/yr · or own it for life