I removed flowers from the popcorn cassia plant last fall and stored the in a closed box in m basement over the winter. How do I know what the seeds look like so I can try to start my own plant in spring. Do you have a picture of what the seeds look like?
The seeds will form on the plants as the flowers fade and petals drop. If you removed the flowers before the seeds formed, you may not have seeds in the box that you saved.
This article has a clear image of Cassia seeds.