84-91 days. Summer Sun heliopsis seeds grow a playful, robust, and familiar looking perennial that can be sown among sunflowers and wildflowers. Summer Sun seeds grow hardy, drought tolerant heliopsis reaching as high as 36-72 inch tall with golden ruffled 2-3 inch daisy-like blooms. Often called "False Sunflower", Summer Sun seeds are an ideal and leggy grow to highlight the back of a garden, fence, siding, or any wide open space. Summer Sun seeds promise well-branched heliopsis blooms that are a floral shop favorite used to brightly excite any seasonal fresh cut arrangement, basket, or bouquet.