I reseeded my lawn but did not read the instructions on the weed killer and put that on as well. Anything I can do ? How long do I have to wait until I start again?
Since we do not know exactly what weed killer was spread over your grass I would adopt a wait and see position. If the grass seed does not germinate I would wait until late August early September (usually the best time) to repeat the process of reseeding.
In order for the seed to germinate the seed must come in contact with the soil. Rake area beforehand to remove thatch and debris from the area to be reseeded. Seed germination is improved if existing grass is mowed as low as possible for 6-8 weeks while seed germinates and hopefully becomes established. And remember to keep area moist.