Coneflowers Flop Over

Question

They are in a narrow bed and grow profusely but get to a certain height and then flop over. I stake them but wonder if there is some other reason. They look very healthy.

Answer 1

It is likely from being crowded in the soil. Mine fall over after a hard rain. I think too the flowerheads get heavy.

It also could be the soil is somewhat clayey and roots can't get a strong hold. Here is more about coneflower.

https://www.gardeningknowhow.com/ornamental/flowers/coneflower/coneflower-problems.htm

https://www.gardeningknowhow.com/ornamental/flowers/coneflower/growing-purple-coneflowers.htm

https://www.gardeningknowhow.com/ornamental/flowers/coneflower/should-you-deadhead-coneflowers.htm