mouse1818
Well-Known Member
The stems and undersides of my tomato plants are dark purple does this mean there is a phosphorus nutrient lockup? If so how do i fix this? My temps in the day are 80-85 degrees F and at night 70-79 degrees f. note. all these plants when in the seed germination and sprout stage were in temperatures colder than 50 degrees at night could this be why?
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