How to Water great water dock?
Moderate regular watering, allowing brief slight drying between soakings

great water dock · Rumex hydrolapathum
Also known as: horse sorrel; water dock
Grows best in moist soil or shallow water, avoiding acidic soils. Self-seeds freely and also spreads from the roots so can be difficult to control or eradicate. See the advice page on controlling sheep's sorrel for more details
Moderate regular watering, allowing brief slight drying between soakings