Dahlia
Water below
59%
Healthy band 65% to 92%
Needs wateringJust watered
Estimated Reasoned from rooting depth and drought tolerance. Worth checking against your own bed.
Hungry and thirsty in full flower. Keep well watered from midsummer until the frosts.
Hungry and thirsty in full flower. Keep well watered from midsummer until the frosts.
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.