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Giant Hogweed

Giant Hogweed, Heracleum mantegazzianum

Source: https://bit.ly/1UMhsGi Photographer: Richerman CC License: https://bit.ly/1jxQJMa

Giant Hogweed, Heracleum mantegazzianum
Source: https://bit.ly/1UMhsGi Photographer: Richerman CC License: https://bit.ly/1jxQJMa

Giant Hogweed Facts

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Giant Hogweed Physical Description

Firstly, the Giant Hogweed typically grows to an amazing height. This vertical growth typically measures between 6.5 ft and 16.5 ft (2 – 5 m), itself an impressive measurement. But, under ideal conditions, the plant has the ability to grow as tall as 18 ft (5.5 m).

Secondly, a grown plant also produces numerous, large leaves. Further, these sometimes have a width of as much as 5 ft (1.5 m). Also, these grow from a strong, thick stem. This develops colored bright green. The leaves also have dark blotches and rough white hairs.

The large, umbrella-shaped head of this surprising plant boasts another astonishing dimension. The head, or crown, can measure as much as 39 in (1 m) across. In addition, the usually relatively thick stems these grow from also contain the thick, highly dangerous sap.

The flowers of the Giant Hogweed generally develop as small. Nonetheless, they also appear in copious numbers. These small but numerous blooms usually show either white or greenish-white in color. The fruits produce large dry seeds that average 0.4 in (1 cm).

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Giant Hogweed Distribution, Habitat, and Ecology

First of all, the highly prolific Giant Hogweed evolved as native to the Caucasus Mountains, located in Russia. However, the startling species quickly spread to a remarkably wide swathe of western and northern sections of Europe.

Later, it also spread to the countries of Canada and the United States, in North America. There, it quite understandably remains considered an invasive species in many regions. It further displays a remarkable ability to adapt to varied habitats.

However, the remarkable variety of flora primarily thrives in certain, specific types of areas. Therefore, it’s concentrations appear greatest in such regions of the areas it inhabits as coastal areas, along river banks, and in temperate forests.

The plant requires several years of growth before it produces seeds. But, once the Giant Hogweed does, it commonly creates them in vast numbers. In fact, each individual plant typically produces in excess of 20,000 seeds, assuring its ability to spread rapidly.

It’s not just the effects of contact with its sap that serves as the source of what makes it dangerous. The danger is augmented by the speed of its effects. The symptoms typically appear within 15 minutes of contact with the skin and exposure to light. Then, a rash appears.

But this persistent and rapidly-spreading rash can also become quite severe, leaving acid-like burns on the skin. Just a minimum contact with the eyes can cause permanent blindness. Finally, extensive exposure, even just to the skin, can prove fatal in some instances.

Species Sharing Its Range

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