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How to Build a Greenhouse: Tips & Instructions

Research has shown that plants and other life forms grow faster under high temperatures. This is why gardens tend to thrive during spring and summer and dwindle during fall and spring. A greenhouse is a shelter that provides optimal whether conditions for plants year round, no matter what storms and cold winds may be brewing outside. Greenhouse owners are selective with the type of greenhouse they purchase, as well as the location, climate and the actual plants they choose to grow. A perfect combination of each of these items working together will yield the best results.

Things You'll Need

  • Greenhouse kit
  • Framing materials (wood, galvanized steel, aluminum, PVC, Polyethylene or fiberglass)
  • Foundation materials (concrete, gravel or mulch)
  • Heating system
  • Plants
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Instructions

  1. Consult the Experts

    • 1

      Your greenhouse kit and other building materials can be purchased at home supply retailers, such as Home Depot and Lowes. It is wise to consult with a representative from one of these stores for guidance before purchasing your kit and supplies.

    • 2

      Visit a local greenhouse and speak to the owner for tips on how to arrange and manage a greenhouse.

    • 3

      Visit your local bookstore or library for books and DVDs with tips and instructions on how to construct a greenhouse.

    • 4

      If you are constructing your greenhouse for commercial use, contact your local planning and zoning office to determine what permits and permissions that you may need.

    Purchase Your Materials

    • 5

      Purchase a greenhouse kit. This will have everything you need to construct the greenhouse to your liking.

    • 6

      Choose your frame. A variety of materials may be used including wood, galvanized steel, aluminum, PVC, Polyethylene and fiberglass. However, experts generally advise that an aluminum construction will last for very long time.

    • 7

      Decide what type of floor you want to use. The floor of the greenhouse can be made of concrete, gravel or mulch. According to HGTV, mulch is the least expensive choice and seems to add humidity in the greenhouse. It also allows the gardener to plant vegetables and other plants directly into the ground.

    Decide Your Location

    • 8

      Make plans to build your greenhouse in an open area with a direct line exposure to the sun.

    • 9

      Be certain your location will also allow access to your watering or irrigation system. Without access to rain, your plants will need constant manual irrigation.

    • 10

      Allow enough room around your entrance, exits and windows to load supplies in and out of your greenhouse.

    Construct Your Greenhouse

    • 11

      Thoroughly read the instructions on your Greenhouse kit and follow each step carefully.

    • 12

      Gather the tools and supplies you need and organize them into the steps in which they will be used.

    • 13

      Enlist the help of family or friends to help you with the construction.

    • 14

      Consider whether your greenhouse kit allows for shelves and benches and install them correctly according to the instructions.

    • 15

      Hire a glass specialist to help you install your glass windows and ceilings. If you choose to have retractable ceilings, you should hire a contractor to help you install them correctly.

    Plan Your Heating System

    • 16

      You will need to install a heating system to ensure your plants receive the warmth needed for growth even during winter months. Determine whether you want to use an electric, gas or propane system.

    • 17

      Contact the appropriate utility company to install your heating system.

    • 18

      Test your heating system to ensure it is working correctly.