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Tomatoes: Unripened patches
I have about 10 tomato plants given to me by my mother in law (so I am not
sure of the variety) growing in 10 litre pots outside. I feed them regularly
and there is an abundance of fruit. (I am in the Northern hemisphere.)
However many of them have green (unripe) parts taking up about an eighth of
As I grow these to make good old Kiwi tomato sauce I want then over ripe
rather than green. Is there some mineral deficiency being highlighted by the
green spots or is there some other problem?
Too much Nitrogen and too little Potassium can led to this blotchy delayed
ripening. However, a range of other factors might eually be responsible for
· high soil moisture and high humidity
· low light intensity and lach of enough heat
· too many fruit and leaves, not enough light getting in and plant working
overtime to ripen all fruit.