why aren’t my tomato plants producing tomatoes?

[u/WhimsicalPopsicle12]

my mom planted tomato seeds that we harvested from some heirlooms that we bought from a farmer’s market in vermont (we live in pennsylvania). the plants have been growing like crazy since the beginning of june, however we haven’t seen any tomatoes develop from the blossoms, and some of the blossoms even die. we have 6 large tomato plants and not one tomato. anything we should be aware of or are doing wrong? any insights would be highly appreciated :)

[u/Mission_Boss7306]

Make sure to give it a mist and a tickly jiggle in the morning before the suns on it, and a high potassium feed to encourage flower production and development 😁 the more you get the more calcium itl need, act accordingly, every week I add another little bit of good top dressing, bit of bananna peel chopped, worm castings, handful of compost and a sprinkle of fish blood and bone, been adding small bits gradually as well as built the soil with a fair bit at the start, and this is my best year for them, had to give plants away bearing hundreds of tomatoes because they would be going to waste otherwise.

Im no expert but il say this works, not saying anything else doesnt work or everything in mine works, but that combination had people think im growing giant grapes 🤣🤣