Yellowed bottom leaves patchy - is this potassium deficiency?

[limota]

Hi mac07, Looks like there are creases on those leaves, like from moving aquare pots around and the leaves get squished from pressing against the pots. As far as fertilizer, you can’t go wrong with the advice to learn about Korean Natural Farming. A real good info source is the “Organics for Beginners” thread over at icmag. It is really for beginners to advanced. I don’t know how it is that you don’t have any fertilizer. I’ll go back in the posts to see if you mention why. If you are simply poor, and are in the states, I could send you some organic fert to use.