]23]3I discovered 2 days ago that my lemon tree appears to be dying. I'm not sure when it began. Because I have never had problems with this tree, I simply did not notice it turning brown. My neighbor noticed it and informed me.
Prior to this it was healthy, green and had green buds and flowers. It typically puts out beautiful, delicious lemons every year. Although it is watered perhaps every 2-3 days, it receives little water from the sprinkler as it is some distance from it. The soil does drain well and dries in between. It sits directly in the sun. I have never had to fertilize it, but I do keep it pruned.
This tree was here when I bought my home 9 years ago. Nothing has changed in the management of this tree. However, about 2 or 3 weeks ago, I sprayed a very tiny bit of Roundup to kill a weed growing up through the crack of my driveway. I is about 8 feet from the tree and directly parallel to it. I have never used Roundup in this area before. I only use it at the base of my driveway because my yard is full of ornamentals. The only thing I can assume is that perhaps some of this herbicide leached into the soil.
All of the leaves are brown and curled, but there are some green buds still present. Some of the branches are dried and brown when scraped, but others, while brown, have a green, moist texture underneath. I scraped the bottom of the tree trunk and it is moist and green as well(see pic).
There does not appear to be any fungus or infection of the tree trunk; actually, it appears quite healthy. I soaked the base of the tree one time and have gone back to the regular watering schedule to avoid drowning the roots. I don't know what else to do now.
Any advice on how I can save the tree if it is dying from the herbicide?
Here are some updates on the tree's current status, with some new branches and buds: