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PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Symptoms observed in January

Close up of needles showing brick red bands and black fruiting bodies within the bands where spores are released

Dothistroma needle blight occurs all year, but first appears on current foliage about December.

Needles

Brick red bands on green needles with black spots usually seen within the bands. Needles die completely and are retained. Needles may wilt, but usually wither and turn brown/grey.

Incidence and severity

General distribution, almost every tree in affected parts, but tree to tree variation is apparent.

 

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