Tips for Identifying Honeysuckle

There are many different species of honeysuckle (Lonicera), both invasive and native, but honeysuckle leaf blight is most commonly found on invasive Asian bush honeysuckle, like Amur honeysuckle (Lonicera maackii). Amur honeysuckle grows as a perennial shrub and is one of the first understory plants to leaf out in the spring and the last to lose its leaves in the fall. Key identifying characteristics to look for include:

  1. Leaves - oppositely arranged on stems with an oval shape and tapered end
  2. Flowers - present in late spring, tubular in shape with a white to yellow color and sweet fragrance
  3. Stems - mature stems are hollow in the middle
  4. Fruit - bright red to orange berries are produced in clusters in late summer

Honeysuckle leaf blight may also be found on invasive Japanese honeysuckle (Lonicera japonica), which grows as a twining vine. The leaves are oval shaped with a more rounded end, the flowers are similar to those of bush honeysuckle, the stems are reddish-brown in color, and the berries are distinctly black in color.

Honeysuckle leaf blight symptoms are easily distinguished on bush honeysuckle, but Japanese honeysuckle can get many other leaf spots that can be difficult to tell apart without laboratory confirmation.

הועלה ב-יולי 28, 2021 07:29 אחה"צ על ידי mjeaton mjeaton

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