These can be trimmed off with impunity and foliage will quickly follow. Do not fertilize while these plants are in bloom as it will shorten the bloom time. Pulmonaria like a cool root-run. Do not put on benches if it can be avoided as they much prefer the ground. 2 gallon containers can grow a much better plant than a 1 gallon.
Morning sun is appreciated.
Wilting is common and expected on hot days. If the soil is moist, they snap back once things are a bit cooler. Magnesium or Sulfur deficiency improved by the addition of Magnesium Sulfate. Sulfur is usually the culprit. Soil tests should indicate what problem exists.