I have 4 in 6" deep potted soil. All are about 1.2 foot tall. I haven't begun flowering and probably won't because I want to keep them that way (vegetative).

However, my leaves have begun to turn yellow on the bottom. What's the deal?

i water them every couple days (the proper way).

should i add nutrients? is 10-60-10 nutrient good? or is it something else?

please advise.

thanks.