I know you can clone tomatoes. Their stems have tiny threads covering them that look like tiny hairs or downy feathers on a baby bird. If you clip off a branch or sucker and stick it in water, soil or any medium that isn’t toxic to it, those little things become roots within days.
Previously I’ve done it during growing season because a branch had broken accidentally, or had to be pruned, and that seems to be too late to expect the cloned plant to catch up. This year I rooted some cuttings from seedlings I pruned and, a week later, the little seedlings look promising.