I probably would have picked one of the newer tall fescues. However, overseeding these cultivars into K31 will be an uphill battle and it may take many, many years of overseeding to get even a noticeable darker green color. Iron will also help turn turf a darker green. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer.
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