'Evening Sun' Sunflower Seeds. Beautiful, 4-6" flowers in hues of red, orange, golden yellow, and burgundy, with dark centers. Multi-branched sunflower variety, with loads of blooms on each plant all season long. Very long-blooming, and easy to grow. Drought-tolerant once established. Also makes an excellent cut flower, with an extra long vase life. 2g. seed packet Name: Sunflower ‘Evening Sun’ Botanical Name: Helianthus annuus ‘Evening sun’ Life Cycle: annual Color: red, orange, gold, & burgundy hued flowers with dark centers Bloom Season: summer-fall Height: 6-8 ft. Light Requirement: Full Sun Planting Directions: Sow outdoors 1 to 2 weeks after average last frost.