How much light does a 'deep shade' plant need?

How much light does a 'deep shade' plant need?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: How do I determine my garden's level of sun or shade?; How much light does a 'full sun' plant need?; How much light does a 'partial sun' or 'partial shade' plant need? and more...

Deep shade would be almost no light, and there quite honestly are very few plants that can tolerate deep shade where they're receiving no light. Some of our wildflowers that are used to growing in the lowest canopy in a woodland will take deep shade.