Is it too late in the year to plant a garden?

You can do a winter garden... potatoes, squash, pumpkin, carrots, etc

Yes. But make sure it either grows fast. Or is fall to winter growing.

You can grow something's but don't expect a lot in size.

Yes and yes

So can u still grow corn, tomatoes, peppers, green lettuce, strawberries, blueberries & spinach in a garden?