Hello All,

I've got a 5 gallon container with a 3-year old avocado tree growing, and it has some discolored leaves. Spots along veins as attached photos show. Does anyone know what I'm doing wrong?

Auto watering every two days for about five minutes. Perhaps two-three cups per watering. For two years I had fertilized very little, and about six months ago I started using 6-12-6 plant spikes. Two per month. It is either male or female, and opposite plant right next to it has no spots and is doing well with same treatments. Never born fruit. Get's about 4 hours of direct sun in mornings. Photos are from older growth leaves, but newer ones aren't much better.

I'm Zone 9 I believe, in Palo Alto, CA (San Francisco Bay Area)

Thanks in advance for any advice,

Stephen