Answer: Polemonium tends to go dormant in mid summer, so your plant may not be dead after all. It does however require an evenly moist soil, even possibly a woodsy type of soil high in humus. The monarda would need a rich soil that is evenly moist and a location in morning sun or partial shade for best results. Of the three, the perovskia is probably the most resiliant plant although it does best in a hot sunny location that is well drained. I suspect the conditions may have been either too hot or too sunny or too dry for the other two plants.
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