Slight discoloration...is this anything to worry about?

Outdoor grow. seeing slight discoloration on lower leaves...some dying and falling off...overall plants look nice and green tho...thoughts?

On my outdoor, a lot of the older, lower fan leaves turn yellow and fall off as the season goes on. I go through every day and pull off at least 4 or 5. When they get totally yellow, I give them a gentle tug. If they fall off then good. Otherwise, I leave them on and check again the next day. I try to remove any old dying stuff from the plants.

I see some light speckles on some of your leaves that look like possible indication of spider mites. Check thoroughly under the leaves.

I see a small white spot with a brown ring around it on one of the green leaves that could be an indication of septoria. Also, the brown mottled spots on the yellow leaves could be an indication of septoria.

Good luck! Peace

Agreed, get rid of all the growth that is spotted or yellow. This is taking energy away from the plant to focus resistance instead of growth.