Humidity, heat and watering
Read temperature and humidity together. The same relative humidity at different temperatures does not create the same drying demand on a plant.
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Plants & climate · WITH FERN
A screen change alters the crop environment. Review the root-zone observations before carrying on with every previous setting unchanged.
Teral grower guidance · Updated 27 October 2026
FernYour plants & climate guideTHE COCOPEAT CONNECTION
Changes in light and heat can affect plant demand while the coir’s water storage remains the same.
01 / OBSERVE
02 / NARROW IT DOWN
Choose the closest observation for a suggested next check.
Review demand and management with your grower adviser using measured observations.
Check screen coverage, ventilation and root-zone exposure together.
Evaluate light availability and crop expectations before adding more fertiliser.
03 / TAKE THE NEXT STEP
Treat screen adjustments as a reason to update the crop observations and operating plan.
Do not assume cooler air automatically means every part of the root zone is correctly managed.
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