My oriental poppy pods opened and no flowers. They have bloomed in years past. What happened?
Certified GKH Gardening Expert
This could be due to a nutrient imbalance in the soil - such as high nitrogen and low phosphorus. Try adding some bone meal to the soil to bring up the phosphorus levels and encourage blooming. Here is more information: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm