Last night Julia Vanatta gave an extremely interesting presentation on how to design and build a woodland garden and then graciously invited us to tour her garden this Sunday from 1 pm to 5 pm. Her address is 3408 39th Ave. S., Minneapolis 55406. Julia taught us how important the “duff layer” is to getting a woodland garden (as opposed to a shade garden) established. It seems to be the secret ingredient. Apparently it’s easy to get a duff layer started — just don’t rake the leaves in your garden this fall.