I can't even begin to guess what causes it. I've never seen anything like it happen, and I've grown hundreds of different Miscanthus over the years.

I'm having a different issues with 7 mature M.s. 'Gracillimus' plants this year. They haven't even started to bloom yet. The past few years they started in August, and so far nothing this year. Other Miscanthus varieties and all my other warm season grasses are right on time.

By the way, in order to post photos, you have to store them on an online service like PhotoBucket, and then hot-link to their URL, using the HTML tags the website offers for this practice.

I got your email.

For future reference, it's always better to reply here, so any pertinent information can be shared with other forum members.

I'm in a very warm zone 7, and last winter was actually zone 8. In addition, we had a record rainy April, followed by a record dry summer. The combination of all this weird weather may be delaying the 'Gracillimus' blooms, but they don't even appear to be sending out bloom stalks yet, so if they bloom at all, it will be much later than they have in the past. Two neighbors are having the same experience.