NASTURTIUMS:Hummingbirds & Monarch Butterflies Excellent planted with looseleaf lettuce which attract Goldfinch for seeds if left to go to seed. Great planted with herbs. Performs best when left alone, never over water and never fertilize. Leaves and flowers are edible, have a peppery flavor. love nasturtiums and love how they look in planting boxes on this deck. Can also be planted along the edge of a sunny walkway.