56-63 days. Bright Lights cosmos seeds grow a playful, robust, and familiar annual sown among sunflowers and wildflowers. Bright Lights seeds grow hardy, drought tolerant cosmos shrubs as high as 36" tall with sunburst golden 2-3" daisy-like blooms. Bright Lights seeds are an ideal mound to highlight the back of the garden, fence, siding, or any wide open space. Bright Lights seeds promise long-lasting blooms that are a floral shop favorite used to brightly excite any seasonal fresh cut arrangement, basket, or bouquet.