Arboe vitae rust color, possible blight,possible fungal infection? - Ask Extension
Hello,
We notice a litttle rust/browning of to one bush a month ago,and now this has spread to many. Do you have any idea what this is, and how to tr...
Knowledgebase
Arboe vitae rust color, possible blight,possible fungal infection? #817160
Asked December 02, 2022, 11:31 AM EST
Hello,
We notice a litttle rust/browning of to one bush a month ago,and now this has spread to many. Do you have any idea what this is, and how to treat ??
Thank you
16897 1st st.
Lewes,de 1995<personal data hidden>
Sussex County Delaware
Expert Response
There are several reasons your trees may be turning like this.
What were your watering practices this past summer with regard to the trees? (Nature only, drip lines, irrigation, how much water was supplemented.)
Given how quickly they are turning brown, there is probably a disease involved. I am attaching a plant sample form. Please fill it out as fully as possible, more information is better for our pathologist, to diagnose the problem. We will need a sample from the tree at the margin of browning, meaning a branch that has both brown and green tissue on it. Also include in the bag some of the gray branches that have lost all their leaflets. They will look for spores on these as well. You can drop off the sample at our office and we will courier it to the lab in Newark. Sampels are sent up every Tuesday morning at 9am. Our office is located at 16483 County Seat Highway, Georgetown DE. (This is 4 miles west of Rte 113).
Depending on the answer to the watering question, I may ask that you include a root sample as well to look for a root rot issue, i.e. phytopthera.
What were your watering practices this past summer with regard to the trees? (Nature only, drip lines, irrigation, how much water was supplemented.)
Given how quickly they are turning brown, there is probably a disease involved. I am attaching a plant sample form. Please fill it out as fully as possible, more information is better for our pathologist, to diagnose the problem. We will need a sample from the tree at the margin of browning, meaning a branch that has both brown and green tissue on it. Also include in the bag some of the gray branches that have lost all their leaflets. They will look for spores on these as well. You can drop off the sample at our office and we will courier it to the lab in Newark. Sampels are sent up every Tuesday morning at 9am. Our office is located at 16483 County Seat Highway, Georgetown DE. (This is 4 miles west of Rte 113).
Depending on the answer to the watering question, I may ask that you include a root sample as well to look for a root rot issue, i.e. phytopthera.
