Rhododendron
Water below
64%
Healthy band 70% to 92%
Needs wateringJust watered
Estimated Reasoned from rooting depth and drought tolerance. Worth checking against your own bed.
Shallow rooted and acid loving. Mulch generously and use rainwater in hard water areas.
Shallow rooted and acid loving. Mulch generously and use rainwater in hard water areas.
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.