Blueberries are typically ready for picking between late July and mid-August. Generally, they will be blue or purplish-blue when they're ripe. However, consider waiting a couple of extra days to harvest even if they're blue because bigger berries tend to have a sweeter flavor.

Harvest workers picked an average 36 pounds of blueberries an hour at an average piece rate of $0.52 a pound to earn $18.72 per hour.

Even though Washington is the largest producer of blueberries in the nation, there is one town across the country that is known as the blueberry capital of the world, and that's Hammonton, in Atlantic County, NJ.