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The key features of Japanese Knotweed stems?
By The JKL Team

The key features of Japanese Knotweed stems?

Question: What are the key features of Japanese Knotweed stems?

Answer: Key features of Japanese Knotweed stems include their bamboo-like appearance in summer, purple speckles, green leaves at each node, hollow mature stems with pale green fibrous flesh inside, and a brittle, brown appearance in winter.

A Closer Look: 

Japanese Knotweed (Fallopia japonica) stems have several distinctive features that make them identifiable throughout the year. During the summer, these stems exhibit a bamboo-like appearance, growing 2 to 3 meters tall. They are characterized by their hollow structure and notable purple speckles that adorn the green stems. At each node along the stem, vibrant green leaves sprout, creating a lush, dense foliage.

As the stems mature, they maintain a hollow interior with pale green fibrous flesh inside. In winter, these stems undergo a dramatic change, drying out and becoming brown and brittle. This stark transformation from their summer appearance makes the stems easily identifiable even when the plant is dormant. Recognizing these key features helps in the accurate identification and management of Japanese Knotweed throughout the year.

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