Hello silientassasain -

its actually kind of a tough question to answer. " Shade" is relative and subjective. Clover for instance will not - no matter what - grow unless it gets at least 4 hours of direct sunlight/day. With a broken canopy - its very hard to estimate 4 hours - you know what I mean??

Anyhow - Cereal Rye or buck forage oats are a good choice - especially if you seed just before the major leaf fall in October. The leaf fall will increase the daylight for the grain. In the northern states you will not get much growing time - but PA and south this is a really good option to green up logging roads.