Lobelia (Lobelia erinus) is grown as an annual flower in ... with masses of dainty flowers," says Carissa Kasper, gardener at Seed and Nourish. She recommends two rich blue varieties, Crystal ...

Lobelia erinus, Ageratum houstonianum, or Salvia splendens. In addition, we can also sow zonal pelargoniums and verbena. When ...