Experts and BHG readers answer.
Thanks for writing. Sago palms may develop brown fronds from a number of things, including:
- Exposure to especially cold temperatures
- Exposure to herbicides or other chemicals
- The plant getting too much moisture
- The plant drying out
- Bad soil pH
- The plant needing more manganese or another micronutrient
For more help, I'd check with the staff at your county extension service. They should be able to help more if you can bring in a sample of an affected front for their examination.
---Justin, Senior Garden Editor, BHG.com