Dollar tree had flower seeds 2packs for a dollar in fall and so I had bought them. Wanted to try out flowers from seeds. Other pack I bought was Dahlia. And both of them grew nicely and they are quick. I had emptied both pack in 2 pots and lots of plants came out.
Merigold I transferred to a big pot and Dahlia into ground. They are doing good and I see buds on them too.
Try out if you have never grown flowers from seed. They seem to be very easy.