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Sunflower Planting Dates
Sunflower planting date studies at Carrington and Langdon indicate oil percent is highest in early planted (May 10-20) sunflower. Test weight is also higher when planted early. Seed yield at Carrington was highest when planted May 20-30.
Bird and insect damage is a factor to consider. The earliest planted fields may escape bird damage from migrating birds, but may concentrate local birds. Insects may also gather in the earliest blooming fields. Planting over several days in a two week period decreases the risks associated with insects, rainfall patterns and harvest conditions.
Earlier planting, (May 15), usually allows for earlier maturity and hopefully warmer harvest weather. Earlier plantings may also help avoid leaf rust yield losses.
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