Both plants are Inca Red Drop. Both from seed. Both the same height when transplanted.
Plant on the left is in Pro-Mix. Plant on the right is in Miracle Grow Potting Soil. Other than that plants have been treated the same (ferts, water, etc.)
Gee....wonder which is worth using next year????
Just for reference, the "weed" growing in the middle is just under 4feet tall. (45 inches)