Charles Kelm wrote:I'm in the same boat here on the coast in Washington state. I'm on 5.5 wooded acres. I'm making a clearing for my food forest, but being so far north, with the sun so low in the sky, you have to make a pretty big clearing in order for the sun to reach the fruit trees for any good period of time. Thanks Eric for the tips - I have all the ones you mentioned except for pawpaw, medlar and quince. I'll move them up to the top of my "acquire" list.
One idea would be to do espalier fruit against a white, south or west facing wall. White reflects more radiant
energy than any other surface- even shiny metal. It scatters the sun's energy. I noticed
Sepp Holzer's tender Alkmene's are grown on a white, west wall from the picture in his
permaculture book. I think Mollison suggested sun traps with shiny-leaved shrubs, too. White painted barrels filled with water might work for both light reflection and thermal mass. Or build a rock wall and paint it white. Or even walking paths and perimeter using light colored gravel.
From Mollison's
Introduction to Permaculture
In Germany, experiments with tomatoes and peaches against both black and white walls showed more rapid plant growth against the black wall; yield, however, due to better ripening, was higher against a white wall.