coneflowers

Question

Why are my coneflowers all leaves and no flower stems at all? Been this way for the last 2 years.

Answer 1

No blossoms could indicate excess Nitrogen in the soil or over fertilizing.
A soil test can confirm this.
Bone Meal is a good way to add phosphorous, which is needed to promote flowering.

https://www.gardeningknowhow.com/ornamental/flowers/coneflower/growing-purple-coneflowers.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/too-much-nitrogen-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm