re: Question about low tomato production

That looks good, 3-6-4 is just about right and if it’s got some calcium on the label then even better. If not just need to supplement with a handful of garden gypsum at planting and every few weeks to prevent blossom end rot. Add epsom salt as well as a source of magnesium and sulfur. Containers become depleted with excess rain or watering, so the trick is learning to read the plants’ needs without over or under doing it. They should be growing around a foot a week at peak season but there should be just as many blossom stems as regular branches. This was the biggest difference I noticed, before I paid attention to my fertilizer there was a lot of leaf growth but not very many blossoms.