I was just reading one of your posts where you roundup and plant seeds same day. I am planting in a couple of weeks. Is it perfectly safe to contaminate seeds with roundup. I would like to spray 1 more time. Thanks.
Exactly what Bob S posted. Until the seed germinates, it is completely immune to Round-up.
That said, be careful. Seed can germinate amazingly quickly. I've seen cereal grain seed broadcast one day get rained on overnight and begin to germinate the very next day.