Rhubarb
Water below
54%
Healthy band 60% to 85%
Needs wateringJust watered
Derived Worked out from a close relative with the same rooting habit.
A heavy feeder and drinker in spring. Water well while the stems are growing, then ease off.
A heavy feeder and drinker in spring. Water well while the stems are growing, then ease off.
Setting the threshold
These figures are a tested starting point on a calibrated monitor. Watch one full wet to dry cycle in your own bed and adjust if the plant tells you otherwise. Soil type, container size and how much sun the spot gets all shift where the right number sits.