It’s amazing how many things we don’t know about, yet new facts about plants keep emerging all the time. One such discovery came to me quite by accident recently.
Have you ever heard of the kudzu plant? This highly invasive vine grows so fast it’s sometimes called the “mile-a-minute” plant. With large leaves and a main stem reaching up to 30 metres, it smothers natural vegetation and is notoriously difficult to control.
Kudzu can cover the ground quickly, creating hazards like obscured ditches and drains, reducing food for wildlife, and even climbing over overhead wires and tall trees.
In fact, it is banned from sale in certain areas of the country. Just imagine a dense green mat up to two metres deep blanketing the ground everywhere.
Despite its obvious environmental risks, kudzu has striking flowers. Arranged in spikes 10-25cm long, the blooms are purple to pink with a yellow spot at the base, grape-scented, and appear in summer.
The vine’s main stem can reach 30m, with strong side shoots of the same length.
Its roots can extend five metres underground, and it produces tubers 60-90cm long. Interestingly, the leaves, flowers, and roots can be eaten when cooked.
Like many invasive species, kudzu is found in parts of Queensland and New South Wales. Originally from Japan, it was introduced to the US in the 1930s-50s as a soil erosion control measure.
Little did anyone know it would become a relentless grower, overtaking everything in its path – much like rabbits, cane toads, fire ants, and other invasive plants.
Local councils can provide lists of invasive and restricted plants in your area.
Many plants, including trees and shrubs that seem attractive, can become a problem if not contained.
Fortunately, most councils also offer free tree and plant programs.
Kudzu root has been used in Eastern medicine for years, but as with the mushrooms discussed a few weeks ago, it’s important to understand the benefits and risks before consuming unfamiliar foods.
Till next time.
