Just wanted to add to this. If you care about the bees, do not destroy your first bursts of dandelions in early spring. (not a rich source, I know) This is the first blooms feeding for a lot of bees. After the first flush, do what you must but leave the first for the hungry bees.
Dandelions and red maple bloom are the first end of winter meals for the bees. It triggers the queen to lay her eggs. The more dandelions and red maples, the more she lays her eggs.
Other than the bees, the red maple is the most worthless tree ever! It breaks at the drop of a hat. Attracts carpenter ants like a dinner bell. But still great for the bees.