The rules in California depend on if you’re a medical user or not. Here’s the breakdown:
Recreational users: 1 ounce of dried marijuana (flower), 8 ounces of concentrate
Medical marijuana users: 8 ounces of dried marijuana, 8 ounces of concentrate
Furthermore, there are THC limits. The recreational limit is 1,000 mg of THC per package.
The medical limit is 2,000 mg of THC per package.