I have been dyeing the same eco-bundled textile several times to obtain layered plant prints.
For the first print layer, after steaming for an hour , oyster coloured silk noil bundled with purple sandcherry leaves gave greens and blues with alum mordant:
A second bundling/steaming with tagetes (marigolds) and a third bundling/steaming with another layer of purple sandcherry leaves modified the oyster-beige silk to yellowish-green, added several shades of orange, peach and rust from the marigold petals; plus layers of blue, green, blue-green and patches of purple from the sandcherry.