It is not producing feathery plumes but has grown quite large. We planted it two years ago and it has grown large and bushy and looks healthy. What should we do? We have it in the front garden, full sun in the morning. We live in Cramlington.
This could be an issue with to much Nitrogen in the soil. This will cause lush greens and little or not flowering.
Adding Phosphorous will help with flowering and Bone Meal is a good way to dot this.
Here are some links with more information.