Perpetual Green Gardens - "Zone 4" magazine had a long article in their Winter 2012 edition, about the Ott-Kimm Conservatory in MT - which uses no electricity, yet through geothermal and other planning, achieves a Zone 8 for plants - he grows figs, peaches, dogwood. Greenhouse is sunk 5 feet into the ground.... I'd love to try something like this!
Also on these boards
A guide to hardy plants for multiple zones with tips and ideas for a successful perennial garden.
Black-eyed Susan vine - you must plant one of these in your garden this year - it's the vine that keeps going strong all summer long
How to grow plant cuttings. Step-by-step instructions for pinching plants and rooting the cuttings.
Lily-of-the-Valley ~ best in fragrance and coverage.Don't let this little beauty fool you -- though it's small, lily-of-the-valley packs a big fragrance in its nodding white or pink bell-shape flowers. It's a tough, low-care ground cover you can practically plant and forget in shady spots.