My neighbor sprays pesticides/herbicides... How do I protect my garden?

Variations on this question get submitted over and over again on the main forum. However, we limit discussions about poison's on the main forums, and therefore, we decline to publish them. Paul wants organic or better for the main forums.

If you have enough apples and pie, and want to risk some of the apples by discussing this topic, here's a thread where you can do so.

---

My neighbors sprays poisons on their yard. Is it safe to eat food from my garden?

How do I protect my yard from pesticide drift?

How far do I have to be away from a conventional farm to be safe?

What can I grow as a hedge to keep my neighbor's pesticides and herbicides out of my garden?

I've heard a windbreak of a sacrificial species can help with drift.  Like a triple row of hybrid poplar or conifers.  As long as the drift doesn't kill them, they might filter a decent percentage of it out of the air before it gets onto your property.

As for distance from a conventional farm I think the groundwater flow is an important consideration.  If they're uphill the distance would want to be much more than if they're downhill.  Similar for upwind vs downwind.