How to treat white and brown spots on potted vegetables?

[ELee]

hi - I am hoping someone can help me get to the bottom of what’s going wrong in my balcony garden (potted veg in normal and composta (pots with built in worm farm) pots).

My last crop of lettuce developed the marks seen below. They were grown from seed so I wanted to test if it was an issue with the seed but seedlings I planted developed the same issue within a week of being planted in the same pots.

I also added a mini cucumber and some pot friendly eggplants at the same time, and they have concurrently developed white spots on their leaves as well over the same timeframe. I notice my parsley is now also developing some discolouration. Interestingly the tomato and kale planted alongside are presently unaffected.

What is going on with my plants?

what can I do to treat them?

thanks in advance for any assistance you can give me!

Cucumber

Lettuce with brown marksEggplant with white and brown spotsParsley now developing white marks

[EricL]

Hello @ELee 

It's great that you've received excellent advice from @Noelle and @mich1972. Please keep us updated with your progress, if you run into any other issues, please let us know.

Eric