90 - 110 days. Italian White sunflower seeds grow some of summer's most elegant, classic, and vigorous blooms. Italian White sunflower seeds are hardy outdoor favorites for growing unique, gentle color for lining the back of the garden or a decorative planter. Italian White seeds grow timeless 48-72" sunflowers bursting with neat 4" heads of delicate daisy-like canary-cream petals. Italian White sunflowers are easy to grow from seed and known to thrive in a variety of gardens prone to heat, drought, and poor soil across North America.