Best time to seed lawns is now
Posted 8/16/02

Late summer is the best time to seed lawns in Minnesota. But the "window of opportunity" for lawn seeding passes quickly, says Deb Brown, horticulturist with the University of Minnesota Extension Service.

Brown says young grass seedlings need to grow enough that their roots can carry them through winter. The roots also must provide the energy necessary for the seedlings to sprout again the following spring.

"If you plant too late, seeds may germinate," says Brown. "However, itís unlikely theyíll come back strong, if at all, next year."

Whether youíre starting a new lawn or replacing a poor section of an existing lawn, you must eliminate weeds and grasses first. Brown recommends using a product containing glyphosate, such as Round Up. It kills practically all green and growing plants, but it wonít leave any residue in the soil to interfere with new seeds.

"In 10-14 days, when the grass looks dead, you can re-move it," says Brown. "Then add fertilizer, rototill the soil, rake it smooth and plant new seed."

Answers to lawn and plant care and gardening questions are available from the U of M Yard and Garden Line. Call (612) 624-4771 in the metro area or (888) 624-4771 from outside the metro area.