Hollyhocks are very prone tp becoming chlorotic. That is basically when they don't have enough nitrogen and they start to turn lime green. If you leave them like that long enough they will turn yellow, but otherwise look fine. Usually your best bet is either to fertilize them, or if you have very alkaline soil and fertilizer hasn't helped, put miracid on it. The reason for that is the alkalinity inhibits the uptake of nitrogen into the leaves. Putting miracid on it helps to neutralize the soil a bit and allow the plant to draw nitrogen up again. This is particularly key if you have a heavy soil, as it is more likely to be alkaline.
Why are leaves on my hollyhock turning pale green?
may be because of no proper irrigation system, insecticide
Reply:It is sort of hard to tell, but it could be the plant needs a little iron.
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