Lettuce Taking Over!

I doubled the amount of lettuce seeds planted indoors on from 6 varieties on 01-05-19 to 12 varieties on 12-21-19.  We're talking about sprinkling tiny lettuce seeds into 48 cells … just 4 cells per variety.  Not all seeds germinate, but since I'm probably putting 4 to 6 seeds per cell there will be a lot of lettuce … especially since I tried to separate each individual seedling when I transplanted them into the garden on 01-18-20 and 01-20-20.  Not much happened the first six weeks as shown by the 03-01-20 pics.  But in the last 2 weeks we've seen exponential growth as shown by the 03-15-20 & 03-16-20 pics below.