I can recommend Butterpat 2.5, Little Rainbow 2", Raspberry Cupcake 3", Everybody Loves Earnest 2.75", Rosabelle Van Valkenburgh 3" (rebloomed in zone 5 after only 1 year in my garden), Little Bit Extra (double yellow) - 2.5" - for all being very good bloomers. I love the little ones and have about 35 now, but these are the only ones that I can recommend so far as good increasers and good bloomers. I post all of my pictures on this website.
I would love to find a tiny white double!
