Infrared Sunflower is a striking cultivar of Helianthus annuus that brings dramatic color to gardens across zones 2 to 11. This variety thrives in full sun and requires minimal water once established, making it surprisingly low-maintenance for such a show-stopping bloom. Direct sow seeds in spring when soil reaches 55°F, space plants 3 inches apart in rows 30 inches apart, and you'll have tall stems perfect for cutting or seed harvesting within a single growing season.
3
Full Sun
Low To Moderate
2-11
?in H x ?in W
—
High
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The Infrared Sunflower delivers the bold visual impact sunflowers are famous for while asking very little from gardeners in return. Its low water needs and ability to handle frost-tender conditions make it accessible even in challenging climates within its hardiness range. Cutting the central flower head encourages side-shoot production, turning a single planting into multiple blooms for bouquets or seed saving throughout the season.
Infrared Sunflowers excel as cut flowers for arrangements and bouquets. The seeds are also valuable for harvesting; gardeners who cut the mature central flower head and allow the bracts to shrivel can collect seeds for eating or replanting next season.
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Direct sow seeds in the garden as soon as soil warms to at least 55°F. Plant at proper spacing of 3 inches between plants and 30 inches between rows to ensure adequate airflow and room for mature growth.
Cut flowers in the morning just after they open, using a clean knife. For seed harvest, wait until the bracts begin to shrivel, then cut the heads and hang them upside down in a barn or shed to dry completely. Once dry, rub the seeds off the heads.
Cut the mature central flower head to promote side-shoot flower production. This technique transforms a single stem into a multi-flowering plant, extending your bloom season and increasing your harvest.
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