I have lots of poppies ready to flower and next thing the stem gets all floppy and the poppies just fall limp without opening.
Certified GKH Gardening Expert
They may need an all purpose flower fertilizer as this could be a nutrient deficiency. They may also be stretching too much for sunlight if they are not receiving enough. Poppies dont like to be too wet either, wet feet can cause legginess also. This article may help