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September 14, 2013 12:00 AM

The Grapevine (Sept. 14, 2013)

Sunflowers are usually ready to harvest from mid-September into October, horticulturist Ward Upham of K-State says. Cover seedheads with a paper sack or cheesecloth once the petals start turning brown, using a twist tie or rubber band to secure it. Seeds are ready when florets in the brown center of the flower disk are shriveled and heads have turned brown but their backside is lemon yellow. Pull a few seeds to see if they have turned black with white stripes.

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