I have to water my mint plants daily because of the strong sun in Barcelona. So, it gets 2 pints of water a day. Every morning. Onto the surface.

Can that cause the leaves turning yellow close to the surface?

Yes, yellow leaves are soggy roots, also crowded ones. The heat shouldnt bother the plant, but get a deeper pot for the roots to drain better, and try to give them a bit of shade in the afternoon sun. Also, you are pinching top sprigs? It helps the plant know to keep growing

Forgot to mention- this could also just be the old leaves dropping, as mints can get leggy if just allowed to grow,

kittriana said:Forgot to mention- this could also just be the old leaves dropping, as mints can get leggy if just allowed to grow,

Yeah, you must be right. I totally cut it back and now new stems are everywhere, but their leaves dont look as healthy as the leaves that the plant had when I bought it. I just dont know what I am doing wrong. :)






It looks good in the photo, but when the leaves are observed carefully there are tiny brown patches on them and their colour is just not dark green. No clue. Something feels off with this plant. I might just uproot the whole things and put 3-4 new offshoots in the soil to see how they will do.

Try a diff soil- brown on edges could be nitrogen burn, or sunburn from water droplets when the tops get splashed

Ok, i have returned. Mint loves attention, but does best with hard times and abuse- like a weed. Poorer soil brings out its flavors more intensely, the constant cropping sends roots DEEPER, makes them stronger. All plants wilt in the heat and sun. It is a survival trait to withdraw moisture into the roots, then with the sun setting, the plant perks up once again. You might help it thru the changes, Not with water, but with a few hours of shade during the time the sun is strongest.
Good luck!

I saw the basil picture in your other question.. did you put 5+ mint plants in here as well, or is that just one plant? You can't tell with mint since it sends up many shoots. If you have roots in that one pot from 5+ mint plants, that might be adding to your issue. I could be wrong.. maybe mint doesn't care since it has so many shoots normally.