Hydrangea
Water below
69%
Healthy band 75% to 92%
Needs wateringJust watered
Estimated Reasoned from rooting depth and drought tolerance. Worth checking against your own bed.
The name is a clue. Wilts dramatically when dry, though it usually recovers if you catch it quickly.
The name is a clue. Wilts dramatically when dry, though it usually recovers if you catch it quickly.
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.