Sago palm yellow patch
Asked September 23, 2018, 9:58 AM EDT
We received a good bit of rain during a recent storm. For fear of high winds, I put my sago palm with other plants near the house. When I came out to move them back to their original place, I noticed these patches on four of the fronds.
It appears that you may have developed a fungal leaf spot. Without a sample, it is difficult to determine the specific pathogen. My recommendation would be to remove the affected fronds and treat the plant with a fungicide labeled for home use. Chlorothalonil is an active ingredient that works on a wide range of fungi. To determine the specific pathogen, you may want to contact your local extension agent and arrange to submit a sample to the Plant Disease and Insect Clinic on campus. Photos submitted by agents are free of charge. Physical samples require a $20 fee if submitted by your local extension center or you can submit a sample directly for a fee of $30. Here is the link to the clinic website: https://projects.ncsu.edu/cals/plantpath/extension/clinic/index.html
You can contact your local extension office at: https://mecklenburg.ces.ncsu.edu/
Let me know if I can assist you further.