What Are the Sunlight Requirements for great water dock?
Full sun · Partial shade

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
Full sun · Partial shade