Broadleaf Dock

Rumex obstusifolius L. commonly known as Broadleaf dock

Broadleaf dock is of the same family as Japanese Knotweed. It is able to grow in a range of different soil types except for the most acidic soil. It spreads very easily, which is why it is classed as an invasive weed. Just like Himalayan Balsam, it spreads easily threw seed dispersion. This happens through a variety of ways such as wind, animals and water. It is commonly found on wastelands, roadside verges, woodlands and gardens. It can quickly spread creating dense stands which overpower other species. This takes away valuable space, water, nutrients and sunlight from other plants in your garden.

Distinguishing between Broadleaf Dock and Japanese Knotweed

Once the leaves have died back you can be left with very similar stems, which is why it can be commonly misidentified for Japanese Knotweed. However, in the growing season, you will notice unlike the heart-shaped leaves of Japanese Knotweed, it has much larger and fluted leaves. The broadleaf dock also lacks the rhizomes which enables Japanese Knotweed to spread quickly.

Interesting Facts

  • An adult plant can produce up to 60,000 seeds in a year
  • The leaf of a Broadleaf Dock is commonly known as the¬†herbal remedy for a nettle sting
  • It is one of the foodplants for caterpillars of the Small Copper Butterfly

Are you unsure if you have Japanese Knotweed or Broadleaf dock growing on your land? Contact us today, we will be happy to assist!

To learn more about other commonly misidentified plants which are often mistaken for Japanese Knotweed, click here.

Rumex obstusifolius L. Commonly known as Broadleaf dock