Tomato will not turn red! - Knowledgebase Question

STL, Mi
Question by headedoutwes
August 9, 2009
I have several verities of tomato plants growing on pot with round cages on my deck. I used quality soil, water everyday and feed every two weeks with Miracle Grow. The plants have done will and grown big,.. but some plants will not give red fruit! Many tomatoes have grown but still remain green.
Do you know what I'm doing wrong?
Thank you,
Chuck Bridgeton, MO


Image
Answer from NGA
August 9, 2009

0

Tomatoes ripen from the inside out. On lots of tomatoe varieties, the red color of tomatoes won't form when temperatures are above 86oF. So, if you live where the summers get quite hot, leaving tomatoes on the vine may give them a yellowish orange look. It's probably better to pick them in the pink stage and let them ripen indoors in cooler temperatures.

Tomatoes need warmth, not light, to ripen, so there's no need to put them on a sunny windowsill. Place them out of direct sunlight -- even in a dark cupboard -- where the temperature is 65 to 70F and they will turn red.

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