I just picked up a book called “Square Foot Gardening” and was really impressed by it. No tilling and no plowing. Makes the most of every square foot or meter depending on what system you use. This guy has through experimentation determined what plants will grow at given densities best. And a person could aproach his ideas from many angles with many variations.
The landlord does not want us to dig a garden or build a green house but the hanging basket tomato plants and herbs in a pot can be hung from eaves and in window sill boxes. We planted sprouting potatoes in a cut down plastic barrel. Articles on vertical gardening suggest some useful tricks as well. Because we often get killing frosts even in mid June being able to protect the plants is important. Only those with green houses equipped with a wood stove can expect good gardening sucess up herre but maybe a vertical wall garden that can be covered quickly with a protective sheet might work. Too late this year; but maybe next year.
The SFQ can be put up on stands such as barrels or blocks or saw horses even. You would simply supply a plywood bottom to the 4 foot by 4 foot boxes. Drill holes for water drainage. They can be covered with PVC pipe frame tents as the book shows. I have thought that it might be good to try 100 watt light bulb heating, maybe with thermostat control. The box might need to be insulated on the bottom and sides.
I think if you would combine SFG with Ruth Stout’s “No Work Garden” methods using a thick layer of stray, hay or some other material as a very thick mulch, a person could get a lot out of their garden.