Which pot is better for tomato seedlings, the narrower, deeper, or the shorter, wider one? This is an experiment I’ve started probably half a dozen times over the years, then got so caught up in everything else going on in a typical growing season, I never followed up. Maybe in this quieter repair year, we’ll get to a result!
The general idea is simple: roots like to grow down, looking for food and water. Give them a headstart in the down direction, and you should get better results. Earlier fruiting, bigger fruit, overall more productive plants, especially good if you have a shorter season like here, where fall frost will put a halt to the toms. But there’s a big tiny farming BUT.
Labor is that big thing. If you have hundreds of toms to transplant, especially in our heavy soil, digging that extra couple of inches actually takes time and effort that adds up. Having tomatoes a week earlier, if that proves out, won’t offset not getting the transplanting done on schedule in the first place. Adding extra work for a cool idea is a tough one on a hand-run farm that’s not optimizing in terms of thousands of tons of produce like a big commercial, mechanized farm.
I’ve usually gone the other way. Grow toms in plugsheets that would seem ridiculously cramped and tiny compared to the substantial home garden seedlings available for five bucks a pop at the garden center. Get them in the ground early, buried up to their first leaves. Frost risk? There’s always row cover! Let them get on with it from a young age.
Still, experiments are fun, and when you learn stuff by trial and error, first-hand, the knowledge usually finds a way to become useful. Hopefully this year, there will be a solid deep pot vs shallow result!
