I have heard mixed advice on feeding plants after fruit sets. I have 3 heirloom plants in a cedar box on my deck in NYC. The plants are fruiting well, and about 6 feet tall at this point.
The first month or two of growing, I used Miracle-gro (wish I had gone completel organic) to feed about once every 2 weeks.
Any advice on feeding now? I am curious as my fruit, while very tasty (I have harvested 3 tomatoes, with a bunch more about to be ripe), are not as big as I anticipate or wished for. In fact, on my Buck's County, there is one bunch with a relatively large fruit (tennis ball size) but the others are smaller - about 1 1/2 inches in diameter. Will feeding or fertilizing help grow bigger fruit? If so, what is best to use? There is a liquid fish fertilizer at my local garden shop/hardware store, but it seems high in nitrogen - If memory serves me, t is 3-1-1.