Constructing a Greenhouse
Creating a greenhouse, is not an easy task. Many factors are involved in creating a structure. Below are descriptions, tips, and ideas for creating the perfect house.
Types of Greenhouses
Attached- an attached/lean to greenhouse
Does not require four walls
Less expensive and lighter
Good for growing herbs, seedlings, and small vegetables
Freestanding- Stand alone
Can be placed anywhere
More expensive- lasts longer
Can start plants in January and February
Lower Cost per plant
Glazing – covering around greenhouse frame
Let’s sunlight/warmth in
Glass best glazing/most expensive
Plastic Sheeting– works well and is inexpensive
Polycarbonate– less expensive and lightweight
Site Selection
Closer to garden/more use
Maximum exposure to the sun
Should have access to water and electricity
East- West summer sun exposure
At least 6 hours of direct sunlight during winter
Adequate drainage
Environmental Effects
Heating- Cold climate, insulate house
Use heat lamps 220 volt
Warm climate- ventilation
Solar heaters
Ventilation Hand cranked or mechanical
Fans can keep air moving
Electric and temperature sensitive vents
Shading – reduces the amount of summer sunlight
Can be polypropylene, plastic, cloth, wood, aluminum
Can have paint on materials
Keeps plants from becoming burned
Pests- insects that can ruin plant production
Snails
Cabbage Worms
Asparagus Beetle
Mildew
Gray Mold
Raccoons
Aphids
Apple Scabs
Corn Smut
Club Root
