I can't remember if you have an opportunity to grow vegetables outside of your apartment? Is there some space you could place tomatoes? They need a sunny place and a spot where they are protected from direct wind and rain. If the climate provides for some warmth in the coming months they shall do fine outside. In my mans yard we planted two tomato freshlings in a big basin and so far they are doing fine, even though the weather still lacks really warm days. Also, one cucumber in a big pot.

As nice as an indoor tent might be for your weed, I think for vegetables and herbs and stuff the outside world is preferable. Also, the plants get in contact with insects and birds which will spread later seedlings from those outside plants.

From my tiny balcony experiences I observed that flowers grow higher when mingled with herb plants, such as lovage or Maggi herb, as it was called here, which grow higher up, so the flowers themselves tend to grow higher. They compete for the light and produce stronger stems and such. Even basil which is really a sensitive plant with soft leaves gets toughened up in an environment where there it is accompanied by many other plants.

Or is it, that you want to grow eatables in the wintertime? I wonder how this works and am interested where it goes with artificial light and fertilization. I am somewhat skeptical about that, for I think it needs wind, air, insects and all that jazz to have healthy vegetables etc.

Do you compost your leftovers from the cooking? Like the peels from potatoes, cucumbers, carrots etc. etc?