I was looking at your site, and I was thinking it might help boost sales if you expand your product line... instead of making single roses, arrange some bouquets, and photograph and sell them on your site. A lot of brides look for arrangements for their tables and to hold while they walk down the aisle. If you want to market to weddings that would be the way to go. You also might want to try to link up with theknot.com somehow, because that is a HUGE wedding site. Lots of brides to be go there for ideas. If you can get an ad or a mention in one of their articles, it could mean big business for you.
Another idea you might want to think about is marketing to gift shops. A single rose is great to give to a date, and your roses are obviously very unique. Of course, a dozen roses is even better! Is there a way to put 12 of them in a vase?