Posted: 18/06/2013 at 18:40
I have just bought Heuchera Key Lime Pie, with instructions to plant it in shade. Also Corydalis, will self seed and give you little yellow flowers for months. Wild garlic and foxgloves; in fact anything that grows in a wood - bluebells. As Nutc says, when you've raised the canopy you could try veg possibly sorrel; but don't get French sorrel it spreads like wildfire.