It is if they are painted.

I don’t mean to go out with some spray paint and deface a redwood: I mean make an oil painting of a Sequoia gigantea, AKA redwood AKA big tree.

These 6×18” oil paintings sell very steadily. Here is Sequoia Gigantea XXVI from beginning to completion.

At the time of this writing, the painting is outside drying in the heat and sunshine.