Periodic pine die-back along Pachu-Wangchu dry river valley (Photo: Pema Wangda (PhD))

Browning pine along Thimphu-Paro highway attributed to die-back

Hundreds of pine trees along the Thimphu-Paro-Haa highway are turning brown and dying.

The condition is called die-back, in which a tree begins to die from the tip of leaves or roots. The die-back is attributed to disease or unfavorable environmental conditions.

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