500 Seeds. 50-65 days. ProCut® F1 sunflower series seeds grow some of summer's most astonishing, vigorous, and timeless blooms. ProCut sunflower seeds are hardy outdoor favorites for growing unique, vivid color in either a decorative planter or lining the back of the garden. ProCut seeds promise radiant, eye-catching 3-4 inch heads bursting in their signature orange, gold, red, sunburst, or mixed. ProCut sunflowers grow easily from seed and are known to thrive in gardens prone to heat, drought, and poor soil and mature in as early as 50-65 days!