Q: Our young and once healthy peach trees have been appearing less than healthy as the summer has progressed. They are producing fruit, but I first noticed the black things on the bark that I thought ...

Q: I have a mature palo verde tree in my back yard that has what appear to be some kind of white scale on the trunk and several main branches — it almost looks like cement or mortar. On some of the ...

TRAVERSE CITY — Snow-covered trees are the stuff of winter wonderland lore, but a white waxy residue on beech tree bark is the sign of what’s becoming a tragic story. Another invasive pest, the beech ...

Q: I just bought a cherry tree and found it has red shiny spots on most of its leaf stems. I sprayed with a fungicide but see no result, those spots look permanent. Are they OK? Is there some ...

We have a lime tree that we winter indoors. In March, the tree developed about 60 limes. Also during that time, the tree developed scale insects. We purchased a nontoxic solution, which somewhat ...

We see it all in the Plant Clinic, and this summer we’ve been seeing a lot of Acanthococcus lagerstroemiae or crapemyrtle bark scale. This invasive insect from southeast Asia first appeared in the ...

Q. I have half a dozen piñon trees that have scale and are looking rather brown and brittle. I have been watering these trees about twice a week for the past three weeks. When is the best time to use ...

I noticed a wet appearance on a portion of my deck under a magnolia, and also a black growth on its leaves. The branches of the tree seem to have lumps on them. What is this, and what can I do to help ...

Q: I just bought a cherry tree and found it has red shiny spots on most of its leaf stems. I sprayed with a fungicide but see no result, those spots look permanent. Are they OK? Is there some ...