I've got some San Marzano plants doing very well, but there's a little problem I didn't notice at first. The seedling pots I bought each had two plants growing together. So I have two plants growing out of each spot I had intended for one. All are growing quickly, currently about one foot tall and quite lush.
My question is whether I should continue to let them grow as is, or if I need to thin out one plant from each spot in order to get good results.