Thank you for that reference.

Do you think that dead nettle or violets would survive under sunny, rocky conditions? I've had success with them in the past, but they were partly shaded by trees.

Thank you.

Hi Vicki & Russell,

 Both Dead nettle and Violets thrive in a partial shade, moist environment but Dead nettle is generally more sun tolerant than most Violet varieties. A few like the common blue violet can tolerate a full sun location.  Both of these can be a good option for a ground cover in the right area and can also be a troublesome, vigorous invasive.  You'll just want to be prepared for either outcome if you go with one of these plants.

Here is a resource with a bit more information about dead nettle: https://extension.psu.edu/lawn-and-turfgrass-weeds-dead-nettle

And one about violets: https://extension.psu.edu/native-violets

If you'd like to research some additional options this might be helpful to you:

https://extension.missouri.edu/publications/g6835

I hope this helps!  Please let me know if you need anything else.

Best!