Over the last couple weeks we've had a few chilly nights w/ lows in the 40s—nothing crazy, but below average for this area this time of year.
wilted_whisperer
joined 3 days ago
The thought has crossed my mind to rip them out and plant something new in their place, but I figure since they're already in the ground I'll see what I can do.
Here are some close-ups of the purple leaves, top sides first:

The bottoms have black specks:

Even the green leaves have the black specks on their under sides:

Does this look like infection to your eye?
For what it's worth there are also branches w/ no foliage and other branches where the leaves have completely browned and are crispy to the touch, like they were cooked in an air fryer:



Nice setup w/ the shelves, lights, and trays. Have you received any business beyond your family member who helped you prove the concept?