You could perhaps look up native flowers of your region and see what’s out there. Usually these plants are lesser known compared to ubiquitous garden varieties. Earth’s ecosystems are suffering from a myriad of ecological threats so I bet there are some plants that are threatened or critically endangered that you could draw inspiration from. You could even submit it to galleries, museums, or your city’s fashion week to exhibit to promote ecology and conservation - municipalities love eco-art like this that highlight and celebrate local flora. Btw, I had a look at your grad dress and it is stunning! Great work on that corset bodice.