Orange needles on my white pine
Most of our White Pines which are at least four years old or older, this winter the needles have turned bright orange. I think this had something to do with the weather this winter. Is there anything I can do to help them, or are they dead.?
Wadena County Minnesota
White pines are can acquire fungal diseases. To determine if they have a fungal disease send a sample to the plant disease clinic. They could also have annual needle drop which is most severe about every 3 years, this could make a problem look worse or there might not be a problem. Fungal treatments are harsh so it is best to get a correct diagnosis. https://homeguides.sfgate.com/orange-spots-pine-tree-sapling-54462.html https://pdc.umn.edu/ You haven’t sent a photo so I can’t see how extensive the color change is. If there are no green needles they are probably dead.