Different Layers Show You Different Things, Sometimes
Different satellite providers will show you different things, sometimes. Their shots may have been taken at different times of the day, or at different times of the year, or at a slightly different angle. Switch between the layers with the little control doohickey in the upper right.
Here is a spot of land on Google:
Here is the same spot of land on Bing
If you're unsure if what you're looking at is weed, call up a different layer. It might give you a clue!
