I set out the pepinos, mashua and yacon yesterday morning to begin hardening them off. I placed them in the sunniest spot, next to the house.
This morning, when I checked on them, they looked pretty beat up (wilted, yellow leaves). I moved them to partial shade.
I think the direct sun burned them. The lower outside temps may have also been a shock to them.
I think they will be fine in their new location. Lesson learned: gently expose the plants to sunlight gradually; do not do it all at once.