Upside down growing is a creative and simple solution for space limitations when growing vegetables inside a greenhouse.
France Benoit, from Yellowknife NWT grows her determinate (bush) tomatoes upside down.
In Arviat, Nunavut these peppers are grown upside down in recycled coffee cans at the Arviat Wellness Centre greenhouse.
Commercial containers for upside down growing are often available at hardware stores and via seed catalogues. 5 gallon plastic buckets also work just fine, and you can hang them by their handles to the beams of your greenhouse.
Some of the other vegetable plants that apparently can grow upside down include beans and cucumbers (however France cautions that the long vine plants have a tendency to grow and grow and block the light coming into the greenhouse). Also, down south, squash and eggplants.