Don't know. Planned on starting a pot of dandelions to harvest the flowers myself, and freeze them until I have enough for a gallon. Just be sure you're pulling flowers from areas that haven't been sprayed with chemicals. You don't want to drink wine spiked with weed killer.
Fermenting: Blackberry Wine
Aging: Mulberry Wine, Mint Mead, Dandelion Wine, Mesquite Mead
On Hand: Peach Mango Wine, Huck's Cider, Mulberry Mead, Orange Spice Mead, Cyser, Apfelwein, Maple Cinnamon Mead, Hard Cider, Brown Sugar Cider