This is for a civilisation[sic] with a light source!

You need plants with high nutrient and calorie count per cubic meter. Thus, tall plants like wheat, corn and sunflowers where all the useful bits are at the top of a very tall plant won't work.

Plants that you can densely stack without require much vertical space are what I'd focus on. Examples would be legumes, soy, and vegetables.

This is for a civilisation[sic] with a light source!

You need plants with high nutrient and calorie count per cubic meter. Thus, tall plants like wheat, corn and sunflowers where all the useful bits are at the top of a very tall plant won't work.

Plants that you can densely stack without require much vertical space are what I'd focus on. Examples would be legumes, soy, and vegetables.

EDIT: bonus for growing these squat plants in aquaponics systems.

This is for a civilisation[sic] with a light source!

You need plants with a low volume-nutrient ratio. Thus, tall plants like wheat, corn and sunflowers where all the useful bits are at the top of a very tall plant won't work.

Plants that you can densely stack without require much vertical space are what I'd focus on. Examples would be legumes, soy, and vegetables.

This is for a civilisation[sic] with a light source!

You need plants with high nutrient and calorie count per cubic meter. Thus, tall plants like wheat, corn and sunflowers where all the useful bits are at the top of a very tall plant won't work.

Plants that you can densely stack without require much vertical space are what I'd focus on. Examples would be legumes, soy, and vegetables.