In our ongoing battle against the lack of sunlight in our tiny backyard, we've tried two things:
1. Raised the boxes off the ground, so they can get a precious hour of extra sunlight.
2. Cut down the sides of the boxes in the direction of the sun. This won't make a difference when the plants get a little taller, but for now, the plants originally shaded by the side of the box will now get an extra few minutes of sunlight as well.
We're also starting to hit a few days of cooler weather, so our plants get well wrapped up at night. Incidentally, the weather report on weather.com says, "Current Temperature: 60 degrees. High: 59 degrees."