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How can I identify Japanese Knotweed by its leaves?
By The JKL Team

How can I identify Japanese Knotweed by its leaves?

Question: How can I identify Japanese Knotweed by its leaves?

Answer: Identify Japanese Knotweed by its shovel-shaped leaves with pointed tips, staggered on the stem to create a zig-zag pattern, and growing up to 200mm long in a luscious green colour.

A Closer Look: 

Japanese Knotweed (Fallopia japonica) can be identified by its distinctive leaves, which play a key role in distinguishing it from other plants. The leaves are shovel-shaped with pointed tips, creating a unique appearance that is easy to recognize. They grow in a staggered or alternate pattern along the stem, forming a characteristic zig-zag pattern that sets them apart from other species.

Each leaf can grow up to 200mm in length and is typically a luscious green colour during the growing season. The leaves are broad, with a flat base and a pointed tip, giving them a heart or spade-like shape. This combination of size, shape, and growth pattern makes Japanese Knotweed leaves a reliable indicator for identification, especially during the spring and summer months when the foliage is most prominent

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