I bought way too many of some seed types and I'd like to sell some, but...no shops seem to be buying seed. Sota mentions in dialogue that Ladybug's Delight will buy seeds, but then I went there and I couldn't sell them. They're not a selling option at Oak Tree Groceries either. So...is there anyone that I can sell them to? I don't think you can sell them to Gabe either.
#Selling Seeds?
frail steeple
carmine copper
I'm not too sure on this since I haven't unlocked much of the foodcrafting, but I'm pretty sure you can't resell purchased seeds. I think it's tied to what Kat mentions in the tutorial, where you can collect (and sell) seeds through the seeding stage of certain crops or through foodcrafting (drying strawberries to get seeds).
frail steeple
I think that may relate to consumable seeds like spices or legumes. I can sell those because they're technically both a food and a seed, but I was referring to the seeds from opened packets bought from SunnySeed.
modest hinge
You can sell organic seed packages, but not packages you get from the app