not geraniums

this year we're trying strawberries on the railing. We've had them there about a week and so far they're looking fantastic (it's nice to have a good start). So great, in fact, that I'm planning on going back for more. Naomi suggested we do the next batch with a semi-sandy soil. Apparently that's what strawberries like -- ??? Also, sun and not much wind. I'm not quite sure how they'll do with the not-much-wind part, but we definitely get sun on the porch during the summer.