I've planted as late as two weeks before gun season comes in, mid November, andhad no problems. Make sure you disc the plot at least 3 weeks in advance and let some rain hit it, then disc it again and drag it before you plant. Make sure toapply some triple 13 fertlizer on it and plant before a rain, then sometime in December throw some nitrogen on it, it'll green up real nice. Big Buck Blend from your local Co-op works really well, it's a mixture of wheat oatsrye and your choice of either clover or peas.