Q.coneflowers
Newly planted coneflowers (1 month in the ground). Many buds have developed but are not opening into flowers. How soon should I expect flowers instead of only buds? Plants were gallon size from the nursery.

Flowering will depend on the growing conditions, soil nutrients, sunlight and watering.
Here is an article that will refresh you on the care requirements.
https://www.gardeningknowhow.com/ornamental/flowers/coneflower/growing-purple-coneflowers.htm