Lots of thoughts here, so will keep it to a few.

Light-an orbital station already has access to the best growing spectrum known-sunlight. The larger challenge will be photoperiod and the plant morphology in space. An interesting exercise might be to figure out the orbital mechanics needed to provide plants with 16 hours of sunlight and 8 of darkness. It might be easier to use shading systems, which would be an different but also interesting exercise.

Water-NASA developed a system called aeroponics to water plants in space with minimal water. Most of the mass of the veggies would be in water, so there is not much point in lifting water to orbit as water just to drop it back down as food. A better use (and what NASA was interested in) would be to feed people in orbital stations, where their water can be recovered and recycled from waste streams. Same applies to interplanetary travel.

Crop-potatoes or any other starchy crop would be best used in space, not grown in space and dropped to Earth . Any vegetable is going to remove carbon dioxide from the atmosphere, and depending on how it is used some of that carbon could stay out of the atmosphere for years or decades.

Anyway, growing food in space is an interesting idea and I’d like to see further discussion. So far as I know there are still a number of experiments that can be done here on Earth to develop space-grown food, aside from the science fiction story potential.

Javid