How can I identify Japanese Knotweed during autumn?
By The JKL Team

How can I identify Japanese Knotweed during autumn?

Question: How can I identify Japanese Knotweed during autumn?

Answer: In autumn, look for a dense covering of leaves turning yellow and orange, becoming brittle and wilting, with 2-3 meter tall plants and hollow stems turning brown.

A Closer Look: 

In autumn, Japanese Knotweed (Fallopia japonica) undergoes several changes that make it identifiable. One of the key indicators is the transformation of its leaves, which turn yellow and orange as the season progresses. These leaves become brittle and start to wilt, contributing to a dense covering of foliage on the ground. The plant itself, which can still stand 2 to 3 meters tall, exhibits hollow stems that turn brown and become more brittle as they age.

Another distinctive feature in autumn is the appearance of the stems. Initially green and speckled, these stems change colour to brown and maintain a hollow structure, similar to bamboo. This seasonal transformation helps distinguish Japanese Knotweed from other plants, as its combination of tall, hollow brown stems and the shifting colours of its foliage creates a unique autumnal appearance. Recognizing these characteristics is crucial for effective identification and management during this time of year

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