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Building a greenhouse in Burlington ON.   This greenhouse is uncovered from May to October. Then the plastic covering comes down to contain solar heat. Once covered, the inside temperature often reaches 25-30 degrees C on sunny winter days.  This warm, fragrant air comes into the house via a fan, as an effective source of heat through March, April, May, September and October.  The owner is able to sit out in the greenhouse on sunny days.  Cherry tomatoes last until Christmas; kale, lettuce, green onions, chard, chives, thyme, and rosemary last year round. Scroll right in photos below to see the greenhouse being built. The plastic is pulled over a wooden frame, offering an extremely cost effective way to extend the growing season and enjoy the sunshine and warmth during winter.

Home in suburbia where garden and greenhouse will go (4 feet X 14 feet)

Three Garden Cubes added, growing well and ready to cover for winter.

Greenhouse is framed.

Framed, stained and ready to cover.

Plastic cover installed and ready to pull down.

Greenhouse enclosed and ready for winter.

View from the street.

Cold and snowy outside; 26 degrees Celsius in the greenhouse.

The arugula has reached the ceiling by spring.

The Swiss chard looks pretty good!

Here's a broccoli flower.

Spring arrives and the plastic cover is lifted.

Second season- fall 2016 - December - cherry tomatoes are near the ceiling

April 2017 - lettuce, dandelion, garlic chives, chives and kale flowers (goat cheese, pecans, cranberries and avocado from store!) mmmmmmmm