Zebra Grass does not diplay the stripes this year
6th year, no problems before. Trimmed in spring. Could it be lacking something or maybe cross pollinated with another Sea grass? What could have happened?
I'm thinking this might have something to do with the sever weather last winter. It's not unusual for variegated plants like zebra grass to revert to a non-variegated form in response to stress. If the variegation doesn't return naturally, you have a choice of leaving it solid, or replacing it with a variegated form. Here's some general information: https://www.gardeningknowhow.com/ornamental/foliage/maiden-grass/care-for-zebra-grass.htm