in/under the sun

[Tan Elaine]

Day by day, the sunflower stood tall, by the wall in/under the hot sun.

Which preposition should I use?

Thanks.

[bhaisahab]

Day by day, the sunflower stood tall, by the wall in/under the hot sun.

Which preposition should I use?

Thanks.

You could use either. It depends on what image you are trying to evoke.