How Often Should Sunflowers Be Watered?

History

• The sunflower is a native of North America and was first discovered by Europeans from southern Canada to Mexico. The sunflower was domesticated possibly as early as 1000 B.C.E. by western native American tribes.

Description

• The sunflower can grow up to 20 feet tall. Cultivated plants have one yellow flower per plant in the late summer/early fall, but wild species can have over 20 heads per plant. The leaves are large and plentiful, and the stalk is thick and strong, although tall plants may need stabilizing during high winds.

Uses

• The sunflower is grown as a crop for its seeds and oil. The seeds are used as a human food, bird feed and animal feed. Sunflower oil has a high linoleic acid content and is used for cooking. The sunflower also makes a stunning focal point in landscapes and gardens.

Watering and Soil Needs

• Natural rainfall should suffice for watering; however, if it does not rain regularly, hand watering is necessary. Keep the soil moist and feed a liquid fertilizer. Do not over-water, as this can cause yellowing of the leaves. The sunflower's most critical time for water is from 20 days before to 20 days after flowering. Weeding of the sunflower's bed should be performed to prevent competition for water and nutrients.

Fun Fact

• The tallest sunflower was grown in the Netherlands and stood 25 feet 5.4 inches tall, according to the 2004 Guinness Book of World Records.