If you crave tomatoes in February and long for a vase of garden fresh roses in December, greenhouse gardening is for you. Greenhouses use the sun's rays to warm the air in an enclosed, clear room. A multitude of greenhouse models are on the market that you can build.
Measure out the distances between posts for the greenhouse and mark the locations on the ground with marking chalk.
Dig the holes to the recommended depth and place the greenhouse poles.
Mix the concrete in the wheelbarrow, stirring it with the shovel.
Pour the concrete into the holes and position the poles so that they are completely level.
Leave the posts to dry for at least 48 hours.
Assemble the rest of the greenhouse frame and cover the frame with the plastic sheeting based on the manufacturer's directions.