In my city we only have a small place or our house but we can build under it as much as we want so I want to build a place to grow wheat and trees. What's the best layout in terms of light(torches) and water so they grow quickly?

In my city we only have a small place for our house but we can build under it as much as we want so I want to build a place to grow wheat and trees. What's the best layout in terms of light  (torches preferred) and water for growing them quickly?