Rumex conglomeratus aka Green Dock

Rumex conglomeratus, also known as clustered dock and sharp dock, is a plant belonging to the Polygonaceae family. It can be an annual, biennial, or perennial plant that grows up to 1 meter high. It is native to Europe, Asia, and North Africa, but has also been introduced to North America. This species prefers moist soil and can grow in light, medium, and heavy soils with a pH range of acidic, neutral, and basic. It can grow in semi-shade or no shade. However, it is important to note that this plant may be poisonous. For controlling single plants of Clustered Dock, deep hoeing or grubbing can be effective. For larger infestations, a combination of cultivation and herbicides is recommended. Slashing and mowing are not effective, and in pastures, the spray/graze technique can be used to reduce infestation. Additionally, Clustered Dock has been identified as a target for biological control through a cross-jurisdictional government process, allowing activities to develop effective biological controls. On the other hand, Clustered Dock can also be grown as a rare houseplant that thrives with regular watering and direct light within 1 foot of a window. It prefers well-draining soil and does not require added fertilizers if repotted each time it doubles in size.