46+ Tomato Seedlings Purple Leaves. Purple under leaves of tomatoes is a trait of phosphorus deficiency. Today i will be separating and potting up my seedlings.
Timely weeding in nursery is very important to grow healthy seedling.
I raise tomato seedlings under lights with seedling heat mats for bottom heat. Alibaba.com offers 547 tomato seedling products. I agree with carolyn these are nutrient starved seedlings and probably too much soil moisture is causing loss of oxygen that roots need to develop plus the soil may be too cold. Sometimes the leaves of the tomato seedlings we grow in pots gain a purplish shade on the bottom;