NO way! Is what yer sayin', but N and O are short leetle ingredients, and besides, spring is Nigh. the sNOw is going away! YES! So please just mix it up, N's or Os or first Ns and then Os, or Os then Ns. As you like it.
I will start us off with a Nelly Moser Clematis
then a Nemophila, Penny Black
A little Oregano, for flavor...
And an Orostachys boehmeri just for a little desert (ha ha)