I live in Fresno, CA. Temps are around 90 to 110. My plants are browning at the tips (agapanthus). My daylillies are brown-reddish on leaves. I was watering three times a week (Sun. , Tues. , and Friday) in the am, like two. Even some of my sago palm leaves are yellowing in the center. And they are fairly new. Not all plants but some more than others. Anyone have an answer?
My Agapanthus Leaves Are Browning
Certified GKH Gardening Expert
It sounds like they need more water. If they are in the ground, I would recommend watering for longer periods of time on the same scheduled as you have now. If they are in containers, I would recommend watering daily, even 2X daily in those kinds of temps.